Multiple Choice Questions

Twice the speed downstream is equal to the thrice the speed upstream the ratio of speed in sti...........

Mental Ability (N tehsildar) Boats and Streams

Twice the speed downstream is equal to the thrice the speed upstream, the ratio of speed in still water to the speed of the current is :

1 : 5

5 : 1

1 : 3

2 : 3

Let the Downstream speed be 'x' and Upstream speed by 'y'.

A.T.Q :-

2x = 3y

x : y = 3 : 2

Required Ratio = [(x + y)/2] / [(x - y)/2] = [(3+2)/2] / [(3 - 2)/2] = [5/2] / [1/2] = 5 : 1

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