SOLUTION: Sarah can run 3 miles per hour faster than her sister Melissa can walk. If Sarah ran 12 miles in the same time it took Melissa to walk 8 miles, how fast was each sister travelling?
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Question 1080645: Sarah can run 3 miles per hour faster than her sister Melissa can walk. If Sarah ran 12 miles in the same time it took Melissa to walk 8 miles, how fast was each sister travelling?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
Let m and m+3 be the speeds Melissa and Sarah go, respectively. Then:
12/m+3=8/m
12m=8m+24
4m=24
m=6 mph as Melissa's speed; and 9 mph as Sarah's speed. ☺☺☺☺
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