A boat running down stream covers a distance of 24 kms in 4 hours while for covering the same ...........

Quantitative Aptitude ( CCS) Boats and Streams

A boat running down stream covers a distance of 24 kms in 4 hours, while for covering the same distance upstream it takes 6 hours. What is the speed of the boat in still water?

5.5 kmph

6 kmph

3.5 kmph

None of these

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Explanation:

Downstream speed = D/T = 24/4 = 6 km/hr

Upstream speed = D/T = 24/6 = 4 km/hr

Speed in still water = (Downstream Speed + Upstream Speed)/2 = (6+4)/2 = 5 km/hr

By: Deepak Dawra

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A boat running down stream covers a distance of 24 kms in 4 hours while for covering the same ...........

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