Question

Writing and solving inequalities 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?

Answer 1

Let's begin by listing out the information given to us:

Kimberly has $120; Total Amount = $120

Kimberly buys a hardcover book for $36

Amount left = Total Amount - hardcover book cost = 120 - 36 = $84

Amount left = $84

Each gift card is $15

To know how many gift cards Kimberly can buy, we divide the Amount left by the cost of each gift card

`\begin{gathered} (84)/(15)=5.6 \\ \text{Gift card can only be an integer not decimal} \\ As\text{ such, we have to round down}\Rightarrow5.6\text{ }\cong5 \\ x\leq5\text{ } \end{gathered}`