SOLUTION: Sales tax on a $15 compact disc is $0.75. At what rate r is sales tax computed?

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Question 833569: Sales tax on a $15 compact disc is $0.75. At what rate r is sales tax computed?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
15r=.75
1500r=75
100r=5
r=5/100
r=5%