SOLUTION: Two trains leave stations 156 miles apart at the same time and travel toward each other. One train travels at 55 miles per hour while the other travels at 75 miles per

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Two trains leave stations 156 miles apart at the same time and travel toward each other. One train travels at 55 miles per hour while the other travels at 75 miles per       Log On

Their approach rate is the sum of their speeds, or 55+75 = 130 mph.

The distance between them shrinks from 156 miles to 0 miles at that rate.

d = rt

t = d/r

t = 156/130 = 1.2 hours

Edwin