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25 May, 12:37

When Devon cashed a $450 check at the bank, the teller gave him 18 bills, all $20 bills and $50 bills. Which system of equations can be used to find how many of each type of bill Devon received?

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  1. 25 May, 12:55
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    You have two totals: total # of bills and total amount of $. Using x as #of 20s, and y as # of 50s, you can use the system

    x+y=18

    20x+50y=450
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