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26 October, 08:06

a cash register contains only five dollar and ten dollar bills. It contains twice as many five's and tens if the total amount of money is $680 how many tens are in the cash register?

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Answers (2)
  1. 26 October, 08:09
    0
    There are 34 Tens and 68 Fives

    Step-by-step explanation:

    2X*5+X*10=680

    Multiply 2X by 5 to get 10X.

    10X+X*10=680

    Multiply X by 10 to get 10X.

    10X+10X=680

    Since 10X and 10X are like terms, add 10X to 10X to get 20X.

    20X=680

    Divide each term in the equation by 20.

    (20X) / (20) = (680) / (20)

    Simplify the left-hand side of the equation by canceling the common factors.

    X = (680) / (20)

    Simplify the right-hand side of the equation by simplifying each term.

    X=34 tens

    68 fives

    Prove:

    34*10 = 340

    68*5 = 340

    340+340=680
  2. 26 October, 08:29
    0
    There are 34 tens and 68 fives because 34*5 + 68*10 = 680.
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