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mary deposited dimes and quarters into the coinstar machine at her local grocery store. the total money she deposited was 22.15...Asked by Arif
mary deposited dimes and quarters into the coinstar machine at her local grocery store. the total money she deposited was 22.15. if mary had 84 dimes, write and solved a linear equation to find the number of quarters she had
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Answered by
Steve@Math
add up the value of the coins:
10*84 + 25q = 2215
840+25q = 2215
25q = 1375
q = 55
10*84 + 25q = 2215
840+25q = 2215
25q = 1375
q = 55
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