SOLUTION: Two cyclists start from the same place at the same time. They travel in opposite directions. One averages 10 mph and the other 12 mph. After how long will they be 66 miles apart.

Question 249385: Two cyclists start from the same place at the same time. They travel in opposite directions. One averages 10 mph and the other 12 mph. After how long will they be 66 miles apart.
I know the answer is three hours due to drawing a picture... but I'd like to know how to use an equation. Thank you.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
how far will the 10 mph cyclist go?
how far will the 12 mph cyclist go?
how do you know?
because you used three hours
use t and add them together to equal 66

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