
A boat goes 6 km an hour in still water, it takes thrice as much time is going the same distance against the current comparision to direction of current. The speed of the current (in km/hour) is:
4
5
3
2

Important Questions on Ratio, Proportion and Variation





A man covers a certain distance in 10 minutes with the speed of 15km/hr. If he wants to cover the same distance in 7 minutes, then what should be his speed?




Ali travels a distance of in minutes and seconds. What is his speed in ?



A van covers at the rate of and again a distance of at the rate of . Find the average speed of the van (in ) for the whole journey.

Two trains are running opposite each other. Speeds of both trains are and . Find the relative speed of both trains with respect to each other.



Find the speed of the bike in m/sec which covers a distance of m in seconds.



Gopal covers . He travels at a speed of for the first and the rest of the distance at . What is his average speed in ?
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2.
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4.

