Boats and Streams

1.		A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?

4 km/hr

6 km/hr

8 km/hr

Data inadequate

2.		A boat covers a certain distance downstream in 1 hour, while it comes back upstream in 1 1/2 hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?

12 kmph

13 kmph

14 kmph

15 kmph

3.		A boatman goes 2 km upstream in 1 hour and goes 1 km downstream in 10 minutes. How long will it take to go 5 km in still water ?

40 minutes

1 hour

1 hr 15 min

1 hr 30 min

4.		A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place ?

2.4 km

2.5 km

3 km

3.6 km

5.		In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:

3 km/hr

5 km/hr

8 km/hr

9 km/hr

6.		A boat is rowed down a river 40 km in 5 hr and up a river 21 km in 7 hr. Find the speed of the boat and the river.

61/12 kmph

4.5 kmph

5 kmph

5.5 kmph

7.		A boat takes 90 minutes less to travel 24 km downstream than to travel the same distance upstream. If the speed of the boat in still water is 12 km/h, the speed of the stream is:

4 km/h

5 km/h

6 km/h

Can't be determined

8.		A man can row at 5 km/hr in still water. If the river is running at 1 km/hr, it takes him 75 min to row to a place and come back. How far is the place ?

2.5 km

3 km

4 km

5 km

9.		A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:

4

5

6

10

10.		Speed of a boat in still water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

16 hours

18 hours

20 hours

24 hours