The ratio of speed of boat in still water to speed of stream is 8 : 1. It takes 4 hours by boat to cover 54 km downstream and 42 km upstream. Find the...
Question
The ratio of speed of boat in still water to speed of stream is 8 : 1. It takes 4 hours by boat to cover 54 km downstream and 42 km upstream. Find the downstream speed of the boat.