SOLUTION: Chuck paid $372.05 for a stereo system, which included 9.75% sales tax. What was the cost of the stereo system not including the sales tax? a)$339 b)$343 c)$345 D)$347 e)$40

SOLUTION: Chuck paid $372.05 for a stereo system, which included 9.75% sales tax. What was the cost of the stereo system not including the sales tax? a)$339 b)$343 c)$345 D)$347 e)$40

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Question 891377: Chuck paid $372.05 for a stereo system, which included 9.75% sales tax. What was the cost of the stereo system not including the sales tax?
a)$339
b)$343
c)$345
D)$347
e)$408
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
372.05 = 1.0975x (the sales tax + the original cost)
Divide each side by 1.0975
~$339

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