A man rows 12 km in 5 hours against the stream and the speed of curre…

Question

A man rows 12 km in 5 hours against the stream and the speed of current being 4 kmph. What time will be taken by him to row 15 km with the stream?

Accepted Answer

Option D. 1 hour 26 713 minutes. Answer & Solution Answer: Option D Solution: & According to question, & Speed of current y = 4 km/h & Distance = 12 km & Speed in upstream & = ( x - y )km/hr. & Here x is speed of boat in still water & \, = Distance Time & x - 4 = 125 & 5x - 20 = 12 & 5x = 32 & x = 6.4\,km/hr &…