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?
Answers
Answered by
Scott
p + r = 18
35p + 49r = 728
solve the system by substitution or elimination
35p + 49r = 728
solve the system by substitution or elimination
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