A plane averaging 120mi/hr and an express train averaging 60mi/hr depart at the same time from the same city headed for the same destination. If the train arrives 45 minutes later than the plane, how far did they each travel?

Let time by plane = h; then time by train = h + 3/4

120h = 60(h + 3/4) ; solve for h, then get distance.

A farmer wants to enclose a rectangular area next to a river. No fence is used on the side of the area next to the river. If the farmer has 180 ft of fencing and wants the length of the area to be 50 ft longer than the width, find the dimensions of the fenced area.

You're using 4 sides, but fence will cover only 3 sides...try again!