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SSC CPO Paper-I
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A boat covers a distance of 30 km downstream in 2 hours while it takes 6 hours to cover the same distance upstream. How much time the boat will take to cover 90 km in still water?

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Important Questions on Arithmetic

EASY
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 14
A man can row 40 km upstream and 55 km downstream in 13 hours. Also, he can row 30 km upstream and 44 km downstream in 10 hours. Find the speed of the current.
MEDIUM
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 15
A swimmer swims from a point A against the current for 5 min and then swims backwards in favour of the current for the next 5 min and comes to the point B. If AB=100 m, then find the speed of the current.
EASY
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 16
A man rowed against a stream flowing 1.5 km/h to a certain point and then turned back, stopping 2 km short of the place from where he originally started. If the whole time occupied in rowing be 2 h 10 minutes and his uniform speed in still water be 4.5 km/ h, the man went up the stream at distance of how many km?
MEDIUM
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 17
A man can row at the rate of 913 km/hr in still water and he finds that it takes him thrice as much time to row upstream than the time taken to row downstream the same distance in river. The speed of the current is ?
MEDIUM
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 18
Ram can swim at the speed of 6 kmph in still water. If the speed of the current is 2.4 kmph, it takes 3 h 20 min to cover the distance from A to B and B to A. Find the distance between points A and B.
MEDIUM
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 19
Sita takes thrice as long to row a distance against as to row the same distance with the flow of the stream. The ratio of the speed of the boat in still water to the speed of the stream is:
EASY
SSC CPO Paper-I
IMPORTANT
Embibe Quantitative Aptitude>Chapter 1 - Arithmetic>Exercise 16>Q 20
The speed of a boat in still water is 20 kmph and the rate of flow of the river is 4 kmph. Moving along with the stream, a boat went 120 km. What distance will the boat cover in half the previous time going against the stream?