Question

A CD and DVD cost x dollars
a) if the CD costs dollars 10 What does the DVD cost?
b) if the DVD costs three times the CD What does the CD cost?
c) if the CD costs dollars (x-15) What does the DVD cost?

Answer 1

Answer:

Answer: should be x/4

Step-by-step explanation:

if the cost of DVD= 3*CD

then if CD+DVD=x dollars

since DVD=3*CD cost

CD+3*CD=X dollars

4*CD=X dollars

CD=X/4 dollars

SO the answer should be x/4

Step-by-step explanation: