Boats and Streams

The speed of the boat in still water is 20 km/hr and the speed of the stream is 5 km/hr. Find the downstream speed and the upstream speed.

• 55 km/hr,14.5 km/hr

• 45 km/hr,11.5 km/hr

• 35 km/hr,20 km/hr

• 25 km/hr,15 km/hr

A boat running downstream covers a distance of 24 km in 3 hours while for covering the same distance upstream, it takes 6 hours. What is the speed of the current?

• 3 km/hr

• 4 km/hr

• 2 km/hr

• 5 km/hr

A man can row 10 km downstream in 15 minutes and the same distance upstream in 20 minutes. Find the speed of the boat in still water and the speed of the stream

• 11 km/hr,11.5km/hr

• 35 km/hr,5 km/hr

• 35 km/hr,10 km/hr

• 45 km/hr,15 km/hr

Speed of the boat in still water is 15 km/hr and the speed of the current is 7 km/hr. Find the total time taken by a man rowing to a place at a distance of 88 km and back.

• 15 hrs

• 25 hrs

• 35 hrs

• 20 hrs

A boat takes 2.5 hours less to travel 100 km downstream than to travel 75 km upstream. If the speed of the current is 5 km/hr, find the speed of the boat in still water.

• 40 km/hr

• 35 km/hr

• 25 km/hr

• 15 km/hr

A man can row 8 km/hr in still water. If the speed of the current is 2 km/hr and it takes 4 hours to a man to row a place and come back, then how far is the place?

• 15 km

• 20 km

• 35 km

• 40 km

A boat running upstream takes 4 hours 24 minutes to cover a certain distance, while it takes 2 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water respectively?

• 2:1

• 4:3

• 8:3

• 5:2

A man swims downstream 28 km in 4 hrs and upstream 12 km in 3 hrs. Find his speed in still water and also the speed of the current.

• 5.5 km/hr ,1.5 km/hr

• 8.5 km/hr ,4.5 km/hr

• 7.5 km/hr ,3.5 km/hr

• 6.5 km/hr ,2.5 km/hr

The speed of the boat in still water is 15 km/hr. It takes twice as long as to go upstream to a point as to return downstream to the starting point. What is the speed of the current?

• 5 km/hr

• 4 km/hr

• 7 km/hr

• 3 km/hr

A boat covers a certain distance downstream in 6 hours and takes 8 hours to return upstream to the starting point. If the speed of the stream is 3 km/hr, find the speed of the boat in still water

• 6 km/hr

• 5 km/hr

• 3 km/hr

• 4 km/hr