Posted by Chris on .
Tina's change of $1.35 consisted of quarters and dimes only and she received twice as many dimes as quarters. How many dimes were there?

Algebra 
MathGuru,
Let x = quarters
Let 2x = dimes
Equation:
.25(x) + .10(2x) = 1.35
Solve for x. Remember to determine the number of dimes for your answer.