Speed of a boat in standing water is 10kmph 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?	Select
A) 20.48hours  B) 21.48hours  C) 22.48hours  D) 23.48hours  E) 24.48hours
Speed upstream = 8.5kmph   Speed downstream = 11.5kmph   Total time taken = 105/8.5 + 105/11.5 = 21.48 hours   Answer is 21.48hours
<result>B</result>
Speed of a boat in standing water is 10kmph 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?