SOLUTION: Hannah and Caitlyn are riding bikes. They leave from the same place at the same time traveling in opposite directions. Hannah rides 5 mph faster than Caitlyn. After 3 hours the gir

Question 1092558: Hannah and Caitlyn are riding bikes. They leave from the same place at the same time traveling in opposite directions. Hannah rides 5 mph faster than Caitlyn. After 3 hours the girls are 81 miles apart. How fast is Caitlyn riding? Miles per hour
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
Let the distance covered by Caitlyn be x. Then, Hanna's distance is x+15 (5mph times 3hours):
x + x + 15 = 81
2x = 66
x = 33 and 33/3hours = 11mph
That is Caitlyn's speed.
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If you need Hanna's, just add 5 to 11 to get your answer

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