Question

Julie has 8 more than three times as many quarters as dimes. The total value of the coins is $12.20. How many of each kind of coin does she have?
PsyDAG
d = 3q+8

.10d + .25q = 12.20

.10(3q+8) + .25q = 12.20

Solve for q, then d.
Anonymous
20