Speed of a boat in standing water is 12 kmph and the speed of the stream is 3 kmph. A man rows to a place at a distance of 6300 km and comes back to the starting point. The total time taken by him is:
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Answer:
16 hours
Step-by-step explanation:
Speed upstream =9−1.5=7.5kmph
Speed downstream =9+1.5=10.5kmph
Total distance covered upstream=105km
Total distance covered downstream=105km
Time upstream=
7.5
105
=14hrs
Time downstream=
10.5
105
=10hrs
Total Time=14+10=24hrs
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