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13 December, 16:41

Brandon has a cup of quarters and dimes with the total value of $3.80. The number of quarters is 4 less than twice the number of dimes. How many quarters and how many how many dimes does Brandon have

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  1. 13 December, 20:34
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    Dimes = 8 and

    Quarters = 12

    Step-by-step explanation:

    Total value = 380 cents

    let dimes be x

    quarters be 2x - 4

    100 pennies = $1

    1 dime = 10 pennies

    1 quarter = 25 pennies

    Therefore;

    $ 3.78 = 378 pennies

    10x+25 (2x-4) = 378

    10x + 50 x - 100 = 378

    60 x = 378 + 100

    60 x = 478

    x = 478/60

    = 7.9667

    ≈ 8

    Therefore;

    Dimes = 8 and

    Quarters = 12
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