Question

A small motorboat is aimed directly across a river and travels 4.0m/s relative to the water. The river water is flowing to the right with a velocity of 3.0m/s relative to the ground. The boat operator finds that it takes 25s to cross the river
a) what is the shortest distance across the river?
b) how far down the bank from its starting point will the boat land (measured from the point to which the boat was aiming when it started to cross the river)?
c) how far does the boat actually travel while crossing the river?