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- Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.
Question 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: A. 16 hours
B. 18 hours
C. 20 hours
D. 24 hours
Feedback Speed upstream = 7.5 kmph.
Speed downstream = 10.5 kmph.
Total time taken =105/7.5+105/10.5)hours = 24 hours
Speed downstream = 10.5 kmph.
Total time taken =105/7.5+105/10.5)hours = 24 hours
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