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Mathematics 21 Online
OpenStudy (ilovebmth1234):

Every evening Jenna empties her pockets and puts her change in a jar. at the end of the week she counts her money. one week she had 40 coins, all of them dimes and quarters. when she added them up, she had a total of $7.75 how many dimes did Jenna have?

jigglypuff314 (jigglypuff314):

your system of equations would be d + q = 40 0.10d + 0.25q = 7.75

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