Hi and thanks for your help. How do you solve the famous "train problem"? For example, 2 trains leave different stations at the same time. One is traveling at 50 mph and the other at 40 mph. How long does it take them to meet? I probably left out some critical info. Can you please create a typical problem and show me how it is solved?

Thanks, Karen.

Hi Karen,

In one version of this problem you are also given the distance between the stations, say it is 1350 miles. Think about the distance between the trains. This distance starts at 1350 miles and decreases at a rate of 50 + 40 = 90 miles per hour until they meet. This takes

1350 miles x 1/90 hours/mile = 15 hours.

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