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 -
A. 18
B. 16
C. 24
D. 20
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সঠিক উত্তরঃ
C.
24
Explanation:
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