Question

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?​

Answer 1

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.