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A man crosses a river perpendicular to river flow in time t seconds and travels an equal distance downstream in T seconds. The ratio of

A man crosses a river perpendicular to river flow in timet seconds and travels an equal distance downstream inT seconds. The ratio of the man's speed in stillwater to the speed of river water will be(a)

(b)

(c)

(d)

2-7 ++7 T

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