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29 February, 13:36

This Question: 2 pts

20 of 40 (19 complete)

This Test: 80 pts

A bank teller has some five-dollar bills and some twenty-dollar bills. The teller has 10 more of the twenties. The total value of the money is $675 Find the number of five-dollar bills that the teller has

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  1. 29 February, 13:46
    0
    19 five dollar bills

    Step-by-step explanation:

    x = $5 bills and y = $20 bills

    5x + 20y = 675

    y = x + 10

    now we sub

    5x + 20 (x + 10) = 675

    5x + 20x + 200 = 675

    5x + 20x = 675 - 200

    25x = 475

    x = 475/25

    x = 19 <===

    y = x + 10

    y = 19 + 10

    y = 29

    lets check it ...

    5x + 20y = 675

    5 (19) + 20 (29) = 675

    95 + 580 = 675

    675 = 675 (correct) ... so it checks out

    the bank teller has 19 five dollar bills <===
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