Mathematics MCQs

Page No. 55

A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream?


a20/6 hours


b27/2 hours


c30 hours


d30/13 hours


View Answer 30/13 hours

The time taken by a man to row his boat upstream is twice the time taken by him to row the same distance downstream. If the speed of the boat in still water is 42 kmph, find the speed of the stream?


a12 kmph


b13 kmph


c14 kmph


d15 kmph


View Answer 14 kmph

A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?


a15 kmph


b10 kmph


c12 kmph


d12.5 kmph


View Answer 12.5 kmph

A man can row downstream at 18 kmph and upstream at 10 kmph. Find the speed of the man in still water and the speed of stream respectively?


a13, 3


b12, 6


c15, 3


d14, 4


View Answer 14, 4

A boat is rowed downstream at 15.5km/hr and upstream at 8.5 km/hr. The speed of the stream is________?


a3.5km/hr


b5.75km/hr


c6.5km/hr


d7km/hr


View Answer 3.5km/hr

The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?


a10 seconds


b15 seconds


c20 seconds


d12 seconds


View Answer 12 seconds

A person can row at 9 kmph and still water. He takes 4 1/2 hours to row from A to B and back. What is the distance between A and B if the speed of the stream is 1 kmph?


a32 km


b25 km


c28 km


dNone of these


View Answer None of these

A boat running downstream covers 24 km’s in 4 hours while for covering the same distance upstream it takes 6 hours whats the speed of the boat in still water?


a3.5km/hr


b5.5 km/hr


c6 km/hr


dNone of these


View Answer None of these

A boat goes 24 km downstream in 10 hours, it takes 2 hours more to cover the same distance against the stream. What is the speed of the boat in still water?


a2km/hr


b2.8 km/hr


c4 km/hr


dNone of these


View Answer None of these

A boat covers a distance of 30 km in 2 ½ hours running downstream while returning it covers the same distance in 3 ¾ hours. What is the speed of the boat in still water?


a8km/hr


b12km/hr


c14 km/hr


dNone of these


View Answer None of these

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