Answer:
200 CD's.
Explanation:
Jake recorded a special album in honor of mother's day. His mom was so excited that she purchased 40% of the copies in the store.
we have tell the total number of CD's in the store.
Let total number of CD's available in the store was = A
Then 40% of the total numbers of CD's = A×40% = 0.04 A
Since 0.04A = 80
A = 80/0.04 = 200
Therefore there were 200 CD's in the store for the sale.