math
posted by John .
Two trains depart at the same time from the same station and travel in opposite directions. One train travels 25 mph faster than the other train. After 2 hours the trains are 162 miles apart. Find the speed of each train.

If they travel in opposite directions, then just add their distances
distance = speed * time
2x + 2(x+25) = 162
4x + 50 = 162
4x = 112
x = 28
so, the slow train travels 28 mph
the fast train travels 53 mph
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