Grade 7 | Unit 6 | Lesson 17: Modeling with Inequalities | Practice Problems

In the cafeteria, there is one large 10-seat table and many smaller 4-seat tables. There are enough tables to fit 200 students. Write an inequality whose solution is the possible number of 4-seat tables in the cafeteria.

5 barrels catch rainwater in the schoolyard. Four barrels are the same size, and the fifth barrel holds 10 liters of water. Combined, the 5 barrels can hold at least 200 liters of water. Write an inequality whose solution is the possible size of each of the 4 barrels. How are these two problems similar? How are they different?

Solve each equation.

A 200 pound person weighs 33 pounds on the Moon. How much did the person’s weight decrease? By what percentage did the person’s weight decrease?