henry deposited $2.75 in nickels, dimes and quarters in his piggy bank. the number of dimes exceeded the number of quarters by 4, and the number of quarters was 7 less than the number of nickels. find the number of nickels dime and quarters he deposited

Respuesta :

9514 1404 393

Answer:

  • 12 nickels
  • 9 dimes
  • 5 quarters

Step-by-step explanation:

The quantities of dimes and nickels can be expressed in terms of the number of quarters, so it is convenient to use q to represent quarters.

  number of dimes: q +4

  number of nickels: q +7

Total amount of money (in cents):

  5(q +7) +10(q +4) +25q = 275

  40q + 75 = 275 . . . . . . . . . . . . . simplify

  40q = 200 . . . . . . . . . subtract 75

  q = 5 . . . . . . . . . . divide by 40

  dimes = q +4 = 9

  nickels = q +7 = 12

Henry deposited 12 nickels, 9 dimes, and 5 quarters in his piggy bank.

Answer:

5 quarters

9 dimes

12 nickels

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