BOATS and STREAMS Exercise problems and answers

1. A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it take 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
A. 1:3
B. 3:8
C. 6:3
D. 8:3
Explanation:

2. In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still wear (in km/hr) is:
A. 2
B. 4
C. 8
D. 12
Explanation:

3. A man rows downstream 32 km and 14 km upstream. If he takes 6 hours to cover each distance, then the velocity (in kmph) of the current is:
A. 1.5 kmph
B. 1.75 kmph
C. 2 kmph
D. 3 kmph
Explanation:

4. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat(in still water) and the stream is:
A. 1:2
B. 1:3
C. 2:1
D. 3:1
Explanation:

5. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
A. 30 minutes
B. 45 minutes
C. 1 hour
D. 1 hour 15 min
Explanation:

6. A man rows to a place 48 km distance and 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 rate of the stream is:
A. 1 km/hr
B. 2.5 km/hr
C. 3 km/hr
D. 4 km/hr
Explanation:

7. If anshul rows 15 km upstream and 21 km downstream taking 3 hours each time, then the speed of the stream is : 
A. 1 km/hr
B. 2 km/hr
C. 1.5 kin/hr
D. 12 km/hr
Explanation:

8.  A boat takes 4 hours for travelling downstream from point A to point B aild coming back to point A upstream. If the velocity of the stream is 2 kmph and the speed of the boat in still water is 4 kmph, what is the distance between A and B?
A. 4 kms
B. 8 km
C. 6 km
D. 9 km
Explanation:

9. A man can row a boat at 10 kmph in still water. If the speed of the stream is 6 kmph, the time taken to row a distance of 80 km down the stream is : 
A. 8 hours
B. 10 hours
C. 5 hours
D. 20 hours
Explanation:

10. The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is:
A. 1 km/hr
B. 1.5 km/hr
C. 2 km/hr
D. 3 km/hr
Explanation: