Question

Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is 12 km/hr, then the speed of the boat in still water is:

A 55 km/hr
B 60 km/hr
C 50 km/hr
D 75 km/hr
E 90 km/hr
Practice Next

More Boats and streams Questions

Hey! Ask a query