A boat moves downstream at the rate of one km in 7 1/ 2 minutes and upstream at the rate of 5 km an hour. What is the velocity of current?

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Accepted Answer

Rate downstream = (2/15) x 60 km/hr = 8 km/hr Rate upstream = 5 km/hr ∴ Velocity of the current = (8 - 5)/2 km/hr = 1.5 km/hr

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