SOLUTION: A music shop sells used CDs for $10 and new CDs for $15. A customer spent $120 on 10 CDs. How many of each type of CD did the customer purchase?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A music shop sells used CDs for $10 and new CDs for $15. A customer spent $120 on 10 CDs. How many of each type of CD did the customer purchase?      Log On


   

Question 1006651: A music shop sells used CDs for $10 and new CDs for $15. A customer spent $120 on 10 CDs. How many of each type of CD did the customer purchase?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x, used
y, new
system%2810x%2B15y=120%2Cx%2By=10%29