peed 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:
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Step-by-step explanation:
Speed of boat traveling - (9 + 1.5) = 10.5 kmph
Total distance travelled = 105 + 105 = 210 KM
Total time taken = 210 / 10.5 = 20 hours
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