Question

A boat takes 8 hours to travel 42 km upstream and 81 km downstream combined. In another instance, it covers 48 km upstream and 54 km downstream in 7 hours. Determine the time the boat would need to travel 90 km in still water.

A 5 hours
B 5 hours 30 minutes
C 6 hours
D 6 hours 30 minutes
E None of these
Practice Next

Hey! Ask a query