Boats & Streams Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16

A man rows 10 km upstream and back again to the starting point in 55 min. If the speed of stream is 2 km/hr, then the speed of rowing in still water is

a) 21 km/hr

b) 22 km/hr

c) 19 km/hr

d) 25 km/hr

Question : 17

A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in $6{1/2}$ hour. The velocity of the current is

a) 3 km/hr

b) 2.4 km/hr

c) 2 km/hr

d) 0.75 km/hr

Question : 18

A man can row a boat 120 km with stream in 5 hours. If speed of the boat is double the speed of the stream, then the speed of stream is

a) 9 km/h

b) 6 km/h

c) 8 km/h

d) 12 km/h

Question : 19

A man can row three-quarters of a kilometer against the water stream in $11{1/4}$ minutes and along the stream in $7{1/2}$ minutes respectively. The speed in (km/hr) of the man in still water is

a) 5

b) 3.5

c) 2.5

d) 6.5

Question : 20

A man can row 5 kmph in the still water. If the river is running at 2 kmph, it takes him 5 hours to row up to a place and come down. How far is the place?

a) 10 km

b) 6 km

c) 8 km

d) 14 km