SOLUTION: judy drove at a rate of 45 mph from her home to her sister's house and back again at a rate of 55 mph. If she spent a total of 2.5 hours driving, how far does Judy live from her si

Question 990098: judy drove at a rate of 45 mph from her home to her sister's house and back again at a rate of 55 mph. If she spent a total of 2.5 hours driving, how far does Judy live from her sister's
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
judy drove at a rate of 45 mph from her home to her sister's house and back again at a rate of 55 mph. If she spent a total of 2.5 hours driving, how far does Judy live from her sister's
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Avg speed of the RT = 2*55*45/(55+45) = 49.5 mi/hr
Rt distance = 49.5*2.5 = 123.75
--> 61.875 miles each way
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