178k views
0 votes
Ngo has a collection of dimes and quarters with a total value of $5.20. The number of dimes is 4 less than the number of quarters. How many of each coin does he have?​

User Mark Soric
by
7.8k points

1 Answer

5 votes

9514 1404 393

Answer:

  • 16 quarters
  • 12 dimes

Explanation:

Let Q represent the number of quarters. Then (Q-4) is the number of dimes, and the total amount of money is ...

25Q +10(Q -4) = 520

35Q = 560 . . . . . add 40

Q = 560/35 = 16

Ngo has 16 quarters and 12 dimes.

User Ian Sudbery
by
8.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories