The speed of the boat and the speed of the stream is 15km/hr and 3km/hr individually. The boat travel for a period of 3 hours upstream and 4 hours downstream, then what will be the distance covered by it?
ATQ, we can say that Let the speed of stream will be = 15 - 3 = 12km/hr And the speed of Downstream will be = 15 + 3 = 18km/hr hence, the Distance covered by boat will be = (12 x 3) + (18 x 4) = 36 + 72 = 108km
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