Boats & Streams Mock Tests

A boat goes 15 km upstream in 3 hours and 21 km downstream in 3 hours. The speed of the boat in still water is:

A boat goes 30 km upstream and 44 km downstream in 10 hours. It can also go 40 km upstream and 55 km downstream in 13 hours. What is the speed of the boat in still water?

A boat goes 10 km/h upstream and 16 km/h downstream. The speed of the boat in still water is:

A boat goes 12 km/hr in still water and the speed of the stream is 3 km/hr. The time taken to go 45 km downstream is:

A boat goes 24 km upstream in 4 hours and 36 km downstream in 3 hours. The speed of the boat in still water (in km/hr) is:

A boat goes 15 km/hr in still water and the speed of the stream is 3 km/hr. The time taken by the boat to go 36 km downstream is:

A man can row 18 km/hr in still water. If it takes him twice as long to row upstream as to row downstream, what is the speed of the stream?

The ratio of the speed of a boat in still water to the speed of the stream is 5 : 1. The ratio of the time taken to travel the same distance upstream to that taken downstream is: