A motor boat whose speed is 15km/hr in still water goes 30 km down stream and comes back in a total of 4 hours 30 minutes. determine the speed of the stream
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Step-by-step explanation:
When the boat is downstream, the relative velocity of the boat is given by (v + u). Therefore, the speed of the boat in upstream is (15 + x). From the above obtained expression, time taken by the boat to go 30 km upstream will be 3015−x. Time taken by the boat to go 30 km downstream will be 3015+x.
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