SOLUTION: Carol, Debbie and Frieda practice the piano for a total of 23 hours per week. Carol practices twice as much as Frieda, and Debbie practices 3 hours more than Frieda every week. How

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Question 255491: Carol, Debbie and Frieda practice the piano for a total of 23 hours per week. Carol practices twice as much as Frieda, and Debbie practices 3 hours more than Frieda every week. How many hours does each woman practice?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
c=2x=10 hrs
f=x=5 hrs
d=x+3=8 hrs
2x+x+x+3=23
4x=20
x=5