Speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. A man rows to a place at a distance of 4864 km and comes back to the starting point. The total time taken by him is:
250 hours
350 hours
1400 hours
1010 hours
700 hours
Upstream Speed = 14 - 1.2 => 12.8 Km/hr
Downstream Speed = 14 + 1.2 => 15.2 Km/hr
Total time taken = 4864/12.8 + 4864/15.2
= 700 Hours