Posted by Marc on .
Samantha saved $13 by buying a used DVD. She paid $5 less than half the original price of a new one. How much did Samantha pay for a used DVD?

Math 
MathMate,
Solve the problem backwards.
She paid $5 less than half the original price.
So add $5 to what she paid would be half the original price.
I'm sure you can take it from here.