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Speed of a boat in standing water is 9 km/hr and the speed of the stream is 1.5 km/hr. 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 -

Speed of a boat in standing water is 9 km/hr and the speed of the stream is 1.5 km/hr. 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 - Correct Answer 24

Total time = distance down stream  + distance up stream  = 1059 + 1.5 + 1059 - 1.5 = 10510.5 + 1057.5 = 10  + 14 = 24 

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