"Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph.
Channel: Doubtnut
Date: 2020-04-05

"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 
`16 hou r s`
b. `18 hou r s`
c. `20 hou r s`
d. `24\ hou r s`"