NYS COMMON CORE MATHEMATICS CURRICU

NYS COMMON CORE MATHEMATICS CURRICULUM 6•1 Lesson 6
Exercises 2–7 (25 minutes)
Have students work in small groups to solve each problem. Assign each group a problem to share with the class. Leave about 7–10 minutes to allow groups to present to the class.
2. Peter is trying to work out by completing sit-ups and push-ups in order to gain muscle mass. Originally, Peter was completing five sit-ups for every three push-ups, but then he injured his shoulder. After the injury, Peter completed the same amount of repetitions as he did before his injury, but completed seven sit-ups for every one push-up. During a training session after his injury, Peter completed eight push-ups. How many push-ups was Peter completing before his injury?
Peter was completing