Question 614224
Soriano has 20 quarters and nickels. He has a total of three dollars. How many nickels does he have? 
**
let x=number of quarters
20-x=number of nickels
..
.25x+.05(20-x)=3.00
.25x+1-.05x=3.00
.20x=2.00
x=10
20-x=10
ans:
Soriano has 10 nickels