Question

A music store is selling compact disks for $11.50 and $7.50. You buy
12 disks and spend a total of $110. How many compact disks that cost
$11.50 did you buy?

Answer 1

lets say the 11.50 disks is x
lets say the 7.50 disks is y

Answer 2

If we add them together we get 12
if we also add the total cost we get 110
This is two equations

x+y=12
11.50x+7.50y=110

Answer 3

Solve the system of equation for x

Answer 4

i got 5 :( its not right but thats what i keep getting

Answer 5

If you solve for the system of equations you should be able to get the answer. Can you show me your work?

Answer 6

You got it right

Answer 7

did i?

Answer 8

thank you