Question

At a particular music store, CDs are on sale at $15.00 for the first one purchased and $11.00 for each additional disc purchased. Maria spends $70.00 on CDs. How many CDs has Maria purchased?

Answer 1

70-15= 55
next
55/11= 5

your number of CDs are 6, one at 15 dollars and five at 11 dollars

Answer 2

she got 6 movies cause 11 times 5 is 55 plus 15 for the first movie would mean  movies all together.