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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. if mary had 84 dimes, write and solved a linear equation to find the number of quarters she had.
11 years ago

Answers

Ms. Sue
(84 * 0.1) + .25x = 22.15

8.4 + .25x = 22.15

.25x = 13.75

x = 55
11 years ago

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