Mathematics

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9 October, 13:37

Solve for r in the formula S=L-rL where S is the sale price, l is the list price, and r is the discount rate. a. an item with a list of price of $128 goes on sale for $51.20. find the discount rate. b. an item b. with a list price of $56.80 goes on sale for $36.92. find the discount rate.

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