Question

jake recorded a special album in honor of mothers day his mom was so excited she purchased 40% of the copies she has 80 copies of the cd how mandy CDs did the store have for sale

Answer 1

The store had 200 CDs for sale.

Answer 2

Let

x-------> total number of CD's

we know that

1) Jake's mom purchased
`40\%` of the copies in the store.

2) Jake's mom has
`80` copies of the CD's

3)
`80` copies of the CD's represent
`40\%` of the copies in the store

so

`40\%=(40)/(100)=0.40`

`x*0.40=80`

solve for x

Divide by
`0.40` both sides

`x*0.40/0.40=80/0.40`

`x=80/0.40`

`x=200\ Cd's`

therefore

the answer is

`200\ Cd's`