Question

Chi has $11.30 in dimes and quarters. The number of dimes is three more than three times the number of quarters. How many of each are there?

Answer 1

Answer: 20 quarters, 63 dimes

Explanation:

Let the number of dimes be d and the number of quarters be q. Then,
`0.1d+0.25q=11.3` and
`d=3+3q`.

`0.1(3+3q)+0.25q=11.3\\\\0.3+0.3q+0.25q=11.3\\\\0.55q=11\\\\q=20\\\\\therefore d=3(20)+3=63`