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OpenStudy (anonymous):
Anthony has a cup full of nickels and dimes worth $6.80. There are 82 coins all together. Which of the following systems of equations correctly models this situation?
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OpenStudy (aaronq):
let x be the number of nickels and y be the number of dimes, then: 0.05x+0.1y=6.80 you also know that there are a total of 82 coins so, x+y=82 you can use these to solve for the number of coins by substitution.
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