Train \(X\) and train \(Y\) pass one another traveling in opposite directions. Forty minutes later they are \(100\) mile

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Train \(X\) and train \(Y\) pass one another traveling in opposite directions. Forty minutes later they are \(100\) miles apart. If train \(X\)’s constant speed is \(30\) miles per hour greater than train \(Y\)’s, how far does train \(X\) travel during that time?

A. 28
B. 40
C. 60
D. 72
E. 80

Answer: C

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