SOLUTION: At a music store, CDs are sold at $5 each and DVDs are sold at $7 each. If one day it sold 10 more CDs than DVDs, and makes a total of $530, how many CDs and DVDs did it sell respe

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: At a music store, CDs are sold at $5 each and DVDs are sold at $7 each. If one day it sold 10 more CDs than DVDs, and makes a total of $530, how many CDs and DVDs did it sell respe      Log On


   

Question 956034: At a music store, CDs are sold at $5 each and DVDs are sold at $7 each. If one day it sold 10 more CDs than DVDs, and makes a total of $530, how many CDs and DVDs did it sell respectively?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
N=number of DVDs; N+10=number of CDs
$7N+$5(N+10)=$530
$7N+$5N+$50=$530
$12N=$480
N=40 ANSWER 1:They sold 40 DVDs
N+10=40+10=50 ANSWER 2:They sold 50 CDs
CHECK:
$7(40)+$5(50)=$530
$280+$250=$530
$530=$530