Speed of a boat in standing water is 7kmph and speed of the stream is 1.5kmph. A man can rows to a place at a distance of 105km and comes back to the starting point. The total time taken by him is?	Choose the correct choice: A) 32.44hours B) 31.44hours C) 30.44hours D) 29.44hours E) 28.44hours
Speed upstream = 5.5kmph   Speed downstream = 8.5kmph   Total time taken = 105/5.5 + 105/8.5 = 31.44 hours   Answer is 31.44hours
<result>B</result>
Speed of a boat in standing water is 7kmph and speed of the stream is 1.5kmph. A man can rows to a place at a distance of 105km and comes back to the starting point. The total time taken by him is?