Algebra Increase, Decrease, and Percent Change-2

Example 2: After a 25% discount, a music cd cost $9.99. What was the original, retail price. Method 1 Method 2 original percent of change new−original = 100 Let x represent the original price x −x = − 9.99 100 25-25x = 999 – 100x 75x = 999 x = 13.32 The price before discount was $13.32 Let x represent the original price .75x = 9.99 x ... ................
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