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31 March, 22:59

You spend $30.40 on 4 CDs. Each CD costs the same amount and is on sale for 80% of the original price.

a. Write and solve an equation to find how much you spend on each CD. Let p represent the price you pay for each CD.

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  1. 1 April, 00:28
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    Let "p" be the price you pay for each CD's

    Since 4 CDs cost 30.40, the price you pay for each CD (p) is calculated as = total price for all CDs / number of CDs

    So, the price you pay for each CD (p) = 30.40/4 = $7.60

    Since you paid 80% of the original price of each CD = 7.60/0.8 = $9.50

    The price you paid for each CD = $7.60 per CD

    The original price for each CD = $9.50
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