Question 1120682

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 
18
 miles per hour faster than the westbound train. If the two trains are 
600
 miles apart after 
3
 hours, what is the rate of the eastbound train?
<pre>Let eastbound train's speed be S
Then westbound train's speed = S - 18
We then get: 3S + 3(S - 18) = 600
Solve this of S, the speed of the eastbound train. 
You should get: {{{highlight_green(matrix(1,4, S, "=", 109, mph))}}}