Question

Sarah has a total of 52 DVD's and CD's. If the number of CD's is two more than four times the number of DVD's, how many CD's does she have?

Answer 1

CD=42.

Answer 2

DVD number=10
So 4x10=40, then add 2 more=42.
42+10=52.

Answer 3

let the number of CD's be x and DVD's be y
x=4y+2
x+y=52 now solve

Answer 4

from the info given we can create a system of equation:
"Sarah has a total of 52 DVD's and CD's"=c + d = 52

"If the number of CD's is two more than four times the number of DVD's"=c + d = 52
now solve this system:

c + d = 52
c = 4d + 2