1.

Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

Answer» Speed upstream = 7.5 kmph. Speed downstream = 10.5 kmph. Total time taken = 105 + 105 hours = 24 hours. 7.5 10.5


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