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Algebra / Linear inequalities in one or two variables Difficulty: Easy

For a party, $50$ dinner rolls are needed. Dinner rolls are sold in packages of $12$ . What is the minimum number of packages that should be bought for the party?

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Explanation

The correct answer is $5$ . Let $p$ represent the number of packages of dinner rolls that should be bought for the party. It's given that dinner rolls are sold in packages of $12$ . Therefore, $12 p$ represents the number of dinner rolls that should be bought for the party. It's also given that $50$ dinner rolls are needed; therefore, $12 p greater than or equals 50$ . Dividing both sides of this inequality by $12$ yields $p \geq \frac{50}{12}$ , or approximately $p greater than or equals 4.17$ . Since the number of packages of dinner rolls must be a whole number, the minimum number of packages that should be bought for the party is $5$ .