Algebra

posted by .

Sally's collection of quarters and dimes contains $32.85. There are 171 coins in all. How many quarters and dimes are in Sally's collection?


Can you show me the two equations you got and explain

-Thanks

  • Algebra -

    25 Q + 10 D = 3285 (the total number of cents)

    Q + D = 171 (the total number of coins)

    To solve, multiply the second equation by 10.

    10 Q + 10D = 1710

    Now subtract one equation from the other.

    15 Q = 1575
    Q = 105
    D = 171 - 105 = 66

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 7th Grade Math 123

    Write one or two equations to represent the situation below. Solve the equation(s). Show all your work. A collection of dimes and quarters totals 72 coins. Together the dimes and quarters are equal to $11.70. How many of each coin …
  2. algebra/math

    Rico's collection of quaters and dimes contains $32.85. There are 171 coins in all How many quarters and how many dimes are in Rico's collection?
  3. help please?!(:

    Rico's collection of quaters and dimes contains $32.85. There are 171 coins in all How many quarters and how many dimes are in Rico's collection?
  4. mathematics

    In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is $5.75. How many dimes are there in the collection ?
  5. mathematics

    In a collection of nickels, dimes and quarters, there are twice as many dimes as nickels, and 4 fewer quarters than dimes. The total value of the coins is $5.75. How many quarters are there in the collection ?
  6. Algebra

    A coin collection contains 30 coins in nickels, dimes, and quarters. There are three more dimes than nickels. The value of the coins is 3.55. Find the number of quarters in the collection.
  7. algebra

    The ratio of quarters to dimes in a coin collection is 5:3. You add the same number of new quarters as dimes to the collection. a. Is the ratio of quarters to dimes still 5:3?
  8. Intermediate algebra

    A collection of nickels dimes and quarters consists of 50 coins with a total of $5.50. If there are two times as many dimes as quarters find the number of each type of coins?
  9. Math

    Ben has a collection of 15 coins in quarters and dimes. There are 7 quarters in the collection. Is the ratio of quarters to dimes the same as dimes to quarters ?
  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