Question

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 14 miles per hour faster than the westbound train. If the two trains are 640 miles apart after 4 hours, what is the rate of the eastbound train?

Answer 1

73

Explanation:

did it on flvs and 70 is wrong, 73 is the correct answer

Answer 2

4[X+(X-20)]=640
4[2X-20]=640
8X-80=640
8X=640+80
8X=720
X=720/8
X=90 MPH FOR THE EAST BOUND TRAIN
90-20=70 MPH FOR THE WEST BOUND TRAIN
PROOF:
4[90+70]=640
4*160=640
640=640