Question: 
In a stream running at 2 km/hr, a motor boat goes 10 km upstream and back again to the starting point in 55 minutes. Find the speed of the motor boat in the still water.
6 km/hr
6.45 km/hr
7 km/hr
6.45 km/hr
5.5 m/hr
Answer: 
6.45 km/hr
Last Updated: 
08/11/2021 - 03:29