Question

Jake recorded a special album in honor of Mothers Day.His mom was so excited she purchased 40% of the copies in the store.she has 80 copies of the CD.How many CD's did the store have for sale?

Answer 1

the answer is 200. hope that helps

Answer 2

Let

x-------> total number of CD

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

3)
`80` copies of the CD 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`