THE FERRY MAN'S PROBLEM

Level pending

A boat travels at a speed of 5 Km/h across a river stream. The river flows at a speed of 3 Km/h in the eastward direction. The ferry man has to arrive at the location Z which is on the opposite side of the stream, north of the start position of the boat. Find the time taken to arrive at Z, if distance between Z and starting position is 8 Km

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