Question

Daniela has $35.20 in dimes and quarters. She has 2 more dimes than quarters. How many quarters does she have?

Answer 1

let x be dimes and y be quarters

0.1x+0.25y=35.2 [1]
x=y+2

Sub x into [1]
0.1y+0.2+0.25y=35.2
0.35y+0.2=35.2
0.35y=35
y=100

She has 100 quarters :)

Answer 2

THANKS A BUNCH!