Question

Margie has $100. She wants to buy a book for $20 and some CDs for $15 each. At most, how many CDs can Margie buy?

Answer 1

See a solution process below:

Explanation:

After buying the book Margie will have left over:

`$100 - $20 = $80`

`$15` divided into `$80` gives:

`($80)/($15) = ($75 + $5)/($15) = ($75)/($15) + ($5)/($15) = 5 + 5/15`

At most, Margie could buy 5 CDs