SOLUTION: Problem-Solving Strategy: Make A Table Paul wants to buy a stereo system. The store allows a 15% discount if the purchase is paid for within 30 days. A 20% discount is given i

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Question 138543: Problem-Solving Strategy: Make A Table
Paul wants to buy a stereo system. The store allows a 15% discount if the purchase is paid for within 30 days. A 20% discount is given if the purchase is paid for within 10 days. If Paul pays $400 at the time of purchase, what was the original price of the stereo system?

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Since Paul paid at the time of purchase, he got the 20% discount.
He paid 400.
400+=+FullPrice+-+Discount
400+=+Fullprice+-+0.20%2AFullPrice
400+=+0.8%2A+FullPrice
400%2F0.8+=+FullPrice
500+=+FullPrice