George has 26 coins in quarters and dimes. He has a total of $4.70. How many quarters does he have?

he needs 19 quarters.

Step-by-step explanation:

1 quarter: 25 cents

19 quarters: $4.75

you need 19 quarters if you want have $4.75, but if it is with dimes and quarters then it is going to be 15 quarters and 10 dimes.

1 dimes: 10 cents

10 dimes: $1.00

1 quarter: 25 cents

15 quarters: $3.75

1.00+3.75=4.75