Boat and Stream MCQ Set 2

1. A man can row 18 km/h in still water . It takes his two times as long to row up as to row down the river . Find the rate of the stream .

(a) 12 km/h

(b) 6 km/h

(d) 9 km/h

Show Answer

Answer: B

2. A boat travels 3 km upstream in 1 h and 1 km downstream in 12 minutes . How much time will it take for the boat to go 6 km in the still water?

(a) 1h 30 min

(b) 1 h 25 min

(d) 1 h 15 min

Show Answer

Answer: A

3. A swimmer can swim 2 km in 15 minutes in a lake in still water and he can swim 4 km along the flow of river in 20 minutes . If a paper boat is put into river , then how far will it float in 2½ hours?

(a) 18 km

(b) 12 km

(d) 10 km

Show Answer

Answer: D

4. A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours . If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively , the distance of the destination from the starting place is

(a) 16 km

(b) 18 km

(d) 25 km

Show Answer

Answer: C

5. Speed of a boat is 5 km/hr in still water and the speed of the stream is 3 km/hr . If the boat takes 3 hours to go a place and come back , the distance of the place is :

(a) 3.75 km

(b) 4 km

(d) 4.25 km

Show Answer

Answer: C

6. A motorboat , whose speed is 15 km/h in still water goes 20 km downstream and comes back in a total of 4 hours . The speed of the stream (in km/h) is :

(a) 7 √3

(b) 5 √3

(d) 6 √3

Show Answer

Answer: B

7. The speed of a boat in still water is 12 km/h , and the speed of the stream is 3 km/h . A man goes to a place by boat , 45 km and comes back to the starting point . Find the total time taken by him .

(a) 9 hours

(b) 6 hours

(d) 7 hours

Show Answer

Answer: C

8. The speed of a boat in still water is 6 km/h and the speed of the stream is 1.5 km/h . In going from point A to point B and returning to A , the boatman takes 2 hours 40 min . Find the distance between points A and B .

(a) 7.5 km

(b) 7 km

(d) 8.5 km

Show Answer

Answer: A

9. A man rows to a place 48 km distant and comes back in 14 hours . He finds that he can row 4 km with the stream in the same time as 3 km against the stream . The speed of the stream is :

(a) 1.5 km/h

(b) 3.5 km/h

(d) 1 km/h

Show Answer

Answer: D

10. A boat can travel with a speed of 19 km/h in still water . If the speed of the stream is 3 km/h , then what will be the total time (in hours) taken by the boat to go 88 km downstream and 24 km upstream?

(a) 4.5

(b) 5

(d) 5.5

Show Answer

Answer: D