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Asked by Maggie

Amy bought 18 stamps. Some were for postcards and cost 35 cents. The others were for regular mail and cost 49 cents. She spent $7.28 on the stamps. How many of each did she buy?
8 years ago

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Answered by Scott
p + r = 18

35p + 49r = 728

solve the system by substitution or elimination
8 years ago

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