IBPS RRBs Officer Scale I and II 13 Sep 2015 Paper

Question : 74 of 200

Marks: +1, -0

A man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 55 km downstream in 2 hours 30 minutes, what is the speed of the boat in still water ? (in km/h)