Kimberly has $120 to spend at the

bookstore. Kimberly buys a hardcover
book for $36, as well as some gift cards
for her family and friends. Each gift card
is $15. How many gift cards can
Kimberly buy?

Kimberly spent $36 on the hardcover book, so she has $120 - $36 = $84 left to spend on gift cards.

Each gift card costs $15, so she can buy $84 / $15 = 5.6 gift cards.
Since Kimberly cannot buy a fraction of a gift card, she can buy a maximum of 5 gift cards with her remaining money.