Question

Kevin needs to order some new supplies for the restaurant where he works. The restaurant needs at least 491 glasses. There are currently 333 glasses. If each set on sale contains 18 glasses, which inequality can be used to determine xx, the minimum number of sets of glasses Kevin should buy?

Answer 1

Let x = number of sets. Each set has 18 glasses, so total after buying is 333 + 18x. You need at least 491, so

333 + 18x ≥ 491.

Solve: 18x ≥ 158 → x ≥ 158/18 ≈ 8.78, so Kevin must buy at least 9 sets.