Suppose two trains leave a station at the same time travelin

Suppose two trains leave a station at the same time, traveling in opposite directions. One train travels 20 mph faster than the other. In 4.5 hours, the trains are 459 miles apart. Find the speed of each train

Solution

Let the speed of one train be x mph

other train would be x +20

distance = speed*time

459 = (x +x +20)*4.5

2x +20 = 102

2x = 82

x = 41 mph

other train would 61 mph