Boats and Streams

A boat can travel 30 km downstream in 2 hours. If the speed of the stream is 5 km/h, what is the speed of the boat in still water?

• 10 km/hr

• 15 km/hr

• 20 km/hr

• 25 km/hr

Answer explanation

If a boat takes 4 hours to travel 48 km downstream and 6 hours to travel the same distance upstream, what is the speed of the stream?

• 2 km/hr

• 3 km/hr

• 4 km/ hr

• 5 km/hr

Answer explanation

The speed of a boat in still water is 14 km/h, and the speed of the stream is 4 km/h. How long will it take to go 54 km downstream?

• 3 hrs

• 4 hrs

• 5 hrs

• 6 hrs

Answer explanation

A man rows 24 km downstream in 3 hours and returns in 6 hours. Find the speed of the current.

• 1 km/hr

• 2 km/hr

• 3 km/ hr

• 4 km/hr

Answer explanation

A man can row 60 km downstream in 6 hours and the same distance upstream in 10 hours. What is the speed of the man in still water and the speed of the current?

• 10 km/h, 2 km/h

• 8 km/h, 2 km/h

• 9 km/h, 1 km/h

• 9 km/h, 3 km/h

Answer explanation

A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 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?

• 2:1

• 3:2

• 8:3

• 6:5

Answer explanation

The speed of a boat in still water in 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is:

• 1.2 km

• 1.8 km

• 2.4 km

• 3.6 km

Answer explanation

A boat covers a certain distance downstream in 1.5hour, while it comes back in 1 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

Answer explanation

Speed of a boat in standing 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 hrs

• 20 hrs

• 18 hrs

• 24 hrs

Answer explanation

A man rows to a place 48 km distant and come 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

• 1 km/hr

• 1.5 km/hr

• 2 km/ hr

• 2.5 km/hr

Answer explanation