This Problem Set is a part of the Lesson 2, Unit 4, Grade 7. Students should be encouraged to solve these problems using an algebraic approach. Brad put crickets in his pet lizard's cage. After one day, Brad's lizard had eaten of the crickets he had put in the cage. By the end of the next day, the lizard had eaten of the remaining crickets. How many crickets were left in the cage at the end of the second day?