Boats & Streams Model Questions Set 1 Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

If a man’s rate with the current is 12 km/hr. and the rate of the current is 1.5 km/hr, then man’s rate against the current is –

a) 5.25 km/hr

b) 9 km/hr

c) 6.75 km/hr

d) 7.5 km/hr

Question : 2

A man rows a distance downstream in 45 min and the same distance upstream in 75 min. What is the ratio of speed of the stream to the boat in still water ?

a) 1 : 4

b) 1 : 2

c) 1 : 3

d) 2 : 3

Question : 3

A steamer goes downstream from one part to another in 4 hours. It covers the same distance upstream in 5 hours. If the speed of stream is 2 km/hr, the distance between the two ports is

a) 68 km

b) 45 km

c) 64 km

d) 80 km

Question : 4

The speed of a boat in still water is 8 km/hr. It can travel 20 km downstream at the same time as it can travel 12 km upstream, the rate of stream (in kmph) is

a) 2.5

b) 0.5

c) 2

d) 2.75

Question : 5

The speed of a motor boat to that of the current of water is 36 : 5. The boat goes along with the current in 5 hours 10 minutes. It will come back in

a) 6 hours 30 min

b) 5 hours

c) 6 hours 15 min

d) 6 hours 50 min