Algebra

Kevin has $6.45 in coins in his cash box. The numbers of quarters is one less than twice the number of dimes. The number of nickels is one less than twice the number of quarters. The value of the pennies is the same as the value of the nickels. How many of each Type of coin does he have?

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asked by JJ
  1. dimes --- x
    quarters --- 2x - 1
    nickels -- 2(2x-1) -1 = 4x - 3
    pennies = 5(4x-3) = 20x - 15

    10x + 25(2x-1) + 5(4x-3) + 20x-15 = 645
    10x + 50x - 25 + 20x - 15 + 20x - 15 = 645
    100x = 700
    x=7

    7 dimes
    13 quarters
    25 nickels
    125 pennies

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    posted by Reiny
  2. thank u sooo much!!!!!!!:)

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    posted by JJ
  3. Samuel's bank has dimes and quarters in it. The number of dimes is four less than three times the number of quarters. If the total value of the coins is $7.85, how many dimes are in the piggy bank?

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    posted by Scott

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