Question :
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:
1. 16 hours
2. 18 hours
3. 20 hours
4. 24 hours
Answer :
4 - 24 hours
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