math

posted by .

andy has 23 coins worth 3.65 consisting of only quarters and dimes.how manydimes does he have?

  • math -

    =3.42

  • math -

    q+ d = 23 or d = 23-q
    25q + 10d = 365 or
    5q + 2d = 73

    sub in d = 23-q

    5q + 2(23-q) = 73
    5q + 46 - 2q = 73
    3q = 27
    q = 9
    then d = 14

    She has 14 dimes


    check:
    9(25) + 14(10) = 365 YEAH!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Jo has 37 coins (all nickels, dimes and quarters) worth $5.50. She has 4 more quarters than nickels. How many of each type of coins does she have?
  2. math

    rose counted her money and found that her 25 coins which were nickels, dimes, and quarters were worth $3.20. The number of dimes exceeded the number of nickels by 4. How many coins of each kind did she have?
  3. pre calc

    rose counted her money and found that her 25 coins which were nickels, dimes, and quarters were worth $3.20. The number of dimes exceeded the number of nickels by 4. How many coins of each kind did she have?
  4. algebra

    Please help....struggling with word problems and please explain how to get the answer.... Max has a collection of 210 coins consisting of nickels, dimes, and quarters. He has twice as many dimes as nickels, and 10 more quarters than …
  5. word problem money

    you have $ 1.55 in dimes and quarters. find all the possible combinations of coins that you might have i got; 1) 1 quarters 13 dimes 2) 3 quarters 8 dimes 3) 5 quarters and 3 dimes is this right 3 ways?
  6. math

    a box contains 22 coins consisting of quarters and dimes. the total value of the coins is $3.55. determine the number of quarters and the number of dimes in the box?
  7. MATH

    Rick has a box of coins .The box currently contains 51 coins, consisting of pennies, dimes and quarters. The numbers of pennies is equal to the numbers of dimes and the total value is $5.73. How many of each denominations of coins …
  8. math

    When a child breaks open her piggy bank, she finds a total of 76 coins, consisting of nickels, dimes, and quarters. The total value of the coins is $9. If the nickels were dimes, and the dimes were nickels, the value of the coins would …
  9. math

    Sarah has a collection of nickels, dimes, and quarters worth $9.25. She has 10 more dimes than nickels and twice as many quarters as dimes. How many coins of each kind does she have?
  10. 6 grade math

    Please I need help on just the set up using a guess and check table. Karina has some dimes and quarters she has 8 more dimes and quarters and the collection of coins is worth $7.45. How many dimes and quarters does Corona have?

More Similar Questions