Boat and Stream Problems With Solutions – Aptitude Questions and Answers PDF Here!!!

Boats and Stream – Moderate 

1. A boat can travel 55 km downstream in 66 min. The ratio of the speed of the  boat in still water to the speed of the stream is 4: 1. How much time will the boat  take to cover 72 km upstream? 

1.2 hour 48 min 

2.3 hour 12 min 

3.2 hour 24 min 

4.3 hour 28 min 

5.None of these 

2.A boat can travel 4 km upstream in 15 min. If the ratio of the speed of the boat  in still water to the speed of the stream is 9: 5. How much time will the boat take to  cover 28 km downstream? 

1. 42 min 
2. 30 min 
3. 36 min 
4. 44 min 
5. None of these

3.Amit goes Mumbai to Kolkata by sea route. The speed of the boat in still water is 60 km/h and speed of the current is 15 km/h. After reaching Kolkata he stayed there for 20 minutes and after that come back by same boat. The time taken by him  in this journey is 19 hours 32 minutes, find the distance travel by him in one side. A. 450 km 

1. 360 km 
2. 540 km 
3. 600 km 
4. None of these

4.A man can row at a speed of 12 km/hr in still water to a certain upstream point and back to the starting point in a river which flows at 3 km/hr. Find his average speed for total journey. 

1. 12 34km/hr 
2. 11 34km/hr 
3. 12 14km/hr 
4. 11 14km/hr 
5. None of these

5.The ratio of the speed of boat in still water to the speed of stream is 16 : 5. A boat goes 16.5 km in 45 minute upstream, find the time taken by boat to cover the distance of 17.5 km downstream. 

1. 30 minutes 
2. 25 minutes 
3. 50 minutes 
4. 45 minutes 
5. 42 minutes 

6.The boat row with current and against the current in 18 hours and the ratio of the  speed of boat in still water to stream is 3:1. If the distance covers a boat is 120 km,  then find the downstream speed?  

A.16 kmph 

B.20 kmph  

C.24 kmph  

D.28 kmph  

E.None of these 

7. If the ratio of speed of boat in downstream and speed of stream is 9 : 1, speed of current is 3 km per hr, What would be the distance travelled in upstream by the boat in 5 hours? 

• 90 km 
• 97 km 
• 115 km 
• 105 km 
• None of these 

8.The speed of a motor-boat is that of the current of water as 36 : 5, the boat goes along with current in 5 hrs 10 mins. It will come back in

1. 5 hrs 50 mins 
2. 6 hrs 
3. 6 hrs 50 mins 
4. 12 hrs 10 mins 
5. None of these
6. A Boat takes ��48hours more to cover a certain distance in upstream than in  downstream. If speed of Boat in upstream is 16 km/h, then find speed of boat in  still water. (D is the distance covered by boat in upstream and in downstream). 

• 24 km/h  
• 30 km/h  
• 16 km/h  
• 20 km/h  
• 18 km/h 

1. A boat travels with the direction of the current from point A to B and then  returns against the current and stop at point C. Distance between B and C is 75% of  distance between A and B and boat takes 9 hours to cover total distance. If distance  between A to B is 40 Km and Speed of current is 2 km/hr, then find speed of boat  in still water ?  

• 6 km/hr  
• 8 km/hr  
• 4 km/hr 
• 9 km/hr  
• 10 km/hr 

1. Speed of a boat in still water and speed of current is in ratio 4 : 3. If the difference between distance covered by boat in 3 hours upstream and in 3 hours downstream is 54 km. Speed of boat in still water? 

• 18 kmph
• 14 kmph
• 12 kmph 
• 16 kmph
• 24 kmph

1. Normal speed of a boat in still water is 4 times the speed of the river. The boat goes upstream from P to Q and takes 4 hrs. By what percent should the boat increase/decrease its speed if it’s required to reach P from Q in exactly 3 hours? A. Increases by 20% 

• Increases by 25%
• Decreases by 20%
• Decreases by 25%
• None of these

1. Two boats A and B start towards each other from two places, 150 km apart. Speed of the boat A and B in still water are 16 km/hr and 14 km/hr respectively. If A proceeds down and B up the stream, they will meet after. 

• 4.5 hours 
• 4 hours
• 5 hours 
• 6 hours 
• None of these 

1. A, B and C are situated at the bank of river which is flowing at a constant rate. B is at an equal distance with A and C. A swimmer avinash takes 10 h to swim from A to B and B to A .Also, he takes 4 h to swim from A to C. What is the ratio  of speed of Avinash is still water and speed of stream? 

• 5 : 3 
• 3 : 5 
• 2 : 5 
• 1 : 2 
• None of these 

1. A boat takes 26 hours for travelling downstream from point A to point B and  coming back to point C midway between A and B. If the velocity of the stream is 8  km/hr and the speed of the boat in still water is 20 km/hr, then find the distance  between A to B?  
2. 284 km  
3. 212 km  
4. 336 km  
5. 198 km  
6. None of these 
7. A boat covers 24 km upstream and 36 km downstream in 6 hours while it covers 36 km upstream and 24 km downstream in 612hours . The velocity of  current is:
8. 1 km/hr 
9. 1.5 km/hr 
10. 2 km/hr 
11. 2.5 km/hr 
12. None of these 
13. A man can row a boat at a speed of 10 km/hr in still water. He goes to a certain point upstream and back to the starting point in a river. The speed of the flowing water is 4 km/hr. What is the average speed of the boat for that journey?  A. 7.2 km/hr  
14. 8.4 km/hr
15. 6.6 km/hr 
16. 9.2 km/hr
17. None of these
18. 2.The speed of a boat in still water is 18 km/hr and the speed of the stream is 3  km/hr. It takes a total 11 hours to row upstream from point X to Point Y and  downstream from Point Y to Point Z. If the distance from X to Y is one third of the  distance between Y and Z. What is the total distance travelled by the boat (both  upstream and downstream)?  
19. 190 km  
20. 180 km  
21. 210 km  
22. 170 km  
23. 105 km 
24. A boat covers 11.2 km in downstream in 24 minutes and ratio of speed of boat in still water to speed of stream is 5 : 2. Find ratio of time taken by boat to cover 27 km in upstream to time taken by boat to cover 105 km in downstream? A. 5 : 3 
25. 3 : 5
26. 3 : 4
27. 2 : 3
28. 1 : 3
29. A boat covers 120 km downstream in 8 hours and the same distance covers in  upstream in 40 hours. If the speed of boat in still water and speed of stream is  increased by 6 kmph and 4 kmph respectively, then what is the total time taken by  the boat to covers 200 km in upstream and downstream?  
30. 36 hours  
31. 40 hours  
32. 45 hours 
33. 48 hours  
34. None of these 
35. A man can row 40 km upstream and 55 km downstream in 13 hours, also he can row 30 km upstream and 44 km downstream in 10 hours. Find the speed of the man in still water and the speed of the current. 
36. 8 kmph and 2 kmph 
37. 8 kmph and 3 kmph 
38. 7 kmph and 5 kmph 
39. 4 kmph and 7 kmph
40. None of these 
41. The speed of a boat in still water is 60 km/hr, while the speed of stream is 25 km/hr. The boat crosses the stream and lands on the opposite bank at a distance of 195 km from starting point. Find the width of the stream (in km). A. 255 
42. 312 
43. 444 
44. 468 
45. 512 
46. A boat can travel 24 km downstream in 4 hrs less time than it takes to travel the same distance upstream at a certain speed. If its speed is doubled and the speed of stream is tripled then it can travel 14/3 Km distance downstream in 1 hrs less time  than it can upstream. Find the speed of stream. 
47. 20/3 kmph 
48. 10/3 kmph
49. 8 kmph
50. 16/3 kmph
51. 4 kmph 
52. Upstream speed for a boat is 20% less than speed of boat in still water and boat cover 24 km distance in upstream in 45 minutes. If boat goes downstream and comes back upstream up to a certain distance ‘D’ which is 75% of the distance  covered by same both in downstream in total 21 hours 15 minutes. Find total  distance cover by boat in downstream and upstream together. 
53. 1530 km
54. 1560 km
55. 765 km
56. 1020 km
57. None of these
58. Total time taken by the Boat travel from A to B in upstream and downstream in  10hours. The ratio of the speed of the Boat in still water to the speed of the stream  is 5: 1. If the difference between the upstream and downstream speed is 10kmph,  then find the distance between A and B?  
59. 90 km  
60. 60 km  
61. 180 km  
62. 120 km 
63. None of these 
64. If the average of the speed of the boat along with current and against the  current is 20kmph and the speed of the downstream is 20 kmph more than the  speed of the boat against the current. What is the ratio of the speed of the stream to  speed of the boat in still water?  
65. 1:2  
66. 2:3  
67. 3:4  
68. 4:5  
69. Cannot be determine 
70. A Ship of Length 300m traveling from point A to B downstream passes a Ghat  along the river in 18 sec, while in return it passes the same Ghat in 24 sec. If the  rate of current is 9 Km/hr. Then what is the length of the Ghat?  A. 50 m  
71. 60 m  
72. 80 m  
73. 100 m  
74. Cannot be determined 
75. A man rows to a place 60 km distance and come back in 35 hours. He finds  that he can row 4 km along the stream in the same time as 3 km against the stream.  Find the speed in still water and stream.  
76. 1.5, 2  
77. 0.5, 2.5  
78. 3.5, 0.5  
79. 2, 2.5  
80. None of these 
81. Speed of boat in still water is 12 km/hr and speed of current is 8 km/hr. Amar  travels x km along the stream and (x+60) km against the stream in 21 hrs. How  many hours required traveling 4x km along the stream?  
82. 2 hrs  
83. 3 hrs  
84. 6 hrs  
85. 4 hrs  
86. 5 hrs
87. A boat covers certain distance along the stream in 8 sec and returns back 9/16  of the downstream distance against the current in 18 secs. What is the total distance  if the speed of boat in still water is 50 m/s?  
88. 1000 m  
89. 10 km  
90. 100 m  
91. 1500 m  
92. 1200 m 
93. Boat A travels 120 km from P to Q downstream and boat B travels from Q to P upstream. If both the boats starts at 1.00 pm and meets at 2.30 pm and the speed of current is 10 km/hr, then find the sum of the speed of boat A and B  A. 50 km/hr  
94. 60 km/hr
95. 80 km/hr
96. 40 km/hr
97. Cannot be determined
98. A swimmer swims certain distance downstream is 0.6 times of the same  distance in upstream. Find the value of ‘x’ if the speed of boat in still water and  speed of stream is x km/hr and 10 km/hr respectively 
99. 20 km/hr  
100. 30 km/hr  
101. 50 km/hr  
102. 40 km/hr  
103. None of these 
104. A man travels certain distance (x km) along the stream in 3 hrs and against the  stream in 5 hrs. Then find the total time taken to travels x+60 km downstream and  upstream if the speed of stream is 10 km/hr  
105. 11 hrs 12 min  
106. 10 hrs 12 min  
107. 12 hrs 20 min  
108. 12 hrs 20 min  
109. 10 hrs 20 min 
110. A boat covers 12 km upstream and 18 km downstream in 6 hours, while it  covers 18 km upstream and 12 km downstream in 7 hours. Find the speed of the  current.  
111. 3.285 km/hr 
112. 2.528 km/hr  
113. 3.723 km/hr  
114. 2.083 km/hr  
115. 4.625 km/hr 
116. A swimmer swims 48 km upstream and 56 km downstream in 12 hrs. Also, he  can swim 54 km upstream and 70 km downstream in 14 hrs.  

From the statement given in the above question which of the following can be  determined.  

1. Distance covered by the swimmer in 10 hrs upstream  
2. Speed of the swimmer in still water  

III. Downstream speed  

1. Only III  
2. Only III & I  
3. Only III & II  
4. All  
5. None 
6. Two points P and Q are 360 km apart and river flows downstream from P to Q.  Two boats A and B start simultaneously from P and Q respectively towards Q an P  respectively. The still water speed of A is 25 km/hr and that of B is 15 km/hr.  When do the two boats meet if river flows at 5km/hr? 
7. 4.5 hours 
8. 7 hours 
9. 9 hours 
10. 12 hours 
11. None of these 
12. A Boat covers upstream in 12 Hours 48 minutes to travel distance from Point A  to B, while it takes 6 hours to cover 3/4th of the same distance running  downstream. The speed of the current is 15 Km/hr. The boat covered both forward  distance from A to B and backward distance from B to A. Then what is the  distance between A and B? 
13. 360 Km 
14. 480 Km 
15. 540 Km 
16. 640 Km 
17. Cannot be determined
18. If time taken to cover (D+11) km upstream is thrice the time taken to cover (D– 3) km downstream. If ratio of speed of boat in upstream to the downstream is 3 : 7  and time taken to cover (D+18) km downstream is 2.5 hours what will be the speed  of current? 
19. 8.2 km/h 
20. 6 km/h 
21. 8 km/h 
22. 6.5 km/h 
23. None of these 
24. A boat’s speed in still water is 5 km/hr. While river is flowing with the speed  of 2 km/hr. and time taken to cover a certain distance upstream is 2 hr more than  time taken to cover the same distance downstream. Find the distance. A. 11 km 
25. 10.9 km 
26. 12.5 km 
27. 10.5 km 
28. None of these 
29. Speed of a boat in standing water is 12 kmph and the speed of the stream is 3  kmph. A man rows to a place at a distance of 6300 km and comes back to the  starting point. The total time taken by him is: 
30. 1120hrs 
31. 1000hrs 
32. 980hrs 
33. 850hrs 
34. None 
35. The respective ratio between the speed of the boat upstream and speed of the  boat downstream is 4: 9. What is the speed of the boat in still water if it covers 84  km downstream in 2 hours 20 minutes? (in km/h) 
36. 24 
37. 26 
38. 22 
39. 28 
40. 30 
41. There is a road beside a river. Two friends started from a place A, moved to a  temple situated at another place B and then returned to A again. One of them  moves on a cycle at a speed of 6 km/hr, While the other sails on a boat at a speed of 8 km/hr. If the river flows at the speed of 6 km/hr, which of the two friends will  return to place A first? 

1. Cyclist 
2. Sailor 
3. Both come at same time 

D.Anyother 

1. None 
2. Speed of boat in downstream is 24 km/hr while speed of boat is 300% more than speed of stream. Find in total 6 hours, what distance can be covered by  boatman if he covers half distance in downstream and half in upstream?  A. 92km  
3. 70 km  
4. 24 km  
5. 96 km  
6. 108 km 
7. A boat can travel a downstream distance of 72 Km in six hours and upstream  distance of 84 Km in 14 hours. Find the difference between downstream distance  travelled by the boat in 8 hours and distance travelled by the boat in still water in  six hours. Change Language  
8. 42 Km  
9. 36 Km  
10. 54 Km  
11. 60 Km  
12. None of these 
13. A boat takes 150 mins less to travel 40 km downstream than to travel the same  distance upstream. If the speed of the stream is 4, what is the time taken to travel  25 km upstream? 
14. 5/8 hr  
15. 25/16 hr  
16. 25/8 hr  
17. 5/16 hr  
18. None of these 
19. A boat cover the certain distance in upstream in 6 hours and cover the same  distance in downstream in 2 hours. If the speed of the stream is 20 kmph less than  that of speed of the boat in still water, then what is the speed of the boat in still  water? 
20. 20 kmph  
21. 40 kmph  
22. 60 kmph  
23. 30 kmph  
24. Cannot be determined 
25. Ratio of the speed of the boat in still water to stream is 5:3. The time taken by  boat to travel 120 km along with stream and the boat travels 80 km against stream  in 11 hours.Which of the following statement is correct?  
26. Time taken by the boat to travel 100 km along with stream is 8 hours  B. Speed of the downstream is 300% more than that of the speed of the stream.  C. Difference between the speed of downstream and upstream is 30 kmph  D. Speed of the stream is 9 kmph
27. None of these 
28. Speed of the boat in still water is 20 km/hr. Time taken by boat to cover 64 km  upstream is twice the time taken by boat to cover 48 km downstream. What is the  time taken to cover 16km downstream?  

A.1 hr  

B.4 hrs  

C.40 minutes  

D.100 minutes  

E.48 minutes 

49. The speed of a motorboat in upstream is 12 km per hour while river is flowing with a speed of 2 km per hour. If the motorboat takes 3 hours more to travel x km in still water than to travel x – 24 km in downstream. Find the value of x? A. 154 km 
50. 168 km 
51. 175 km 
52. 182 km 
53. None of these 
54. A motorboat goes some distance downstream in 2x hours but it returns only 75% of the previous distance in 1.75x hours. What is the ratio of the speed of the motorboat in still water to the speed of stream? 
55. 5 : 1 
56. 7 : 1 
57. 13 : 1 
58. 9 : 2
59. None of these

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