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28 December, 17:28

Part of the proceeds from a garage sale was $370 worth of $10 and $20 bills. If there were 7 more $10 bills than $20 bills, find the number of each denomination

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  1. 28 December, 17:44
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    370 - 70 = 300

    we are now left with an equal number of $20 and $10 bills to make up the $300

    $20 x 10 = $200

    $10 x 10 = $100

    so we know that 17 bills are $10 and 10 bills are $20
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