1. HOW is percent used to solve real-world problems? Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3

2. 7.RP.3 Use proportional relationship to solve multistep ratio and percent problems. 7.EE.3 Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies. Mathematical Practices 1Make sense of problems and persevere in solving them. 3Construct viable arguments and critique the reasoning of others. 4Model with mathematics. Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

3. Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3 Activity Continued  The eighth grade had 300 tickets to sell to the school play and the seventh grade had 250 tickets to sell. One hour before the show, the eighth grade had sold 225 tickets and the seventh grade had sold 200 tickets. Complete the investigation below to find which grade sold the greater percent of tickets. The bar diagrams below show 100% for each grade. Label the total tickets to be sold above each bar. Divide each bar into 10 equal sections. So, each section will represent 10%.

4. Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3 Activity Continued  The eighth grade had 300 tickets to sell to the school play and the seventh grade had 250 tickets to sell. One hour before the show, the eighth grade had sold 225 tickets and the seventh grade had sold 200 tickets. Complete the investigation below to find which grade sold the greater percent of tickets. Find the number that belongs in each section for both of the bars. Then write that number in the sections. Eighth grade:Seventh grade: 300 10 = 250 10 =

5. Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3 The eighth grade had 300 tickets to sell to the school play and the seventh grade had 250 tickets to sell. One hour before the show, the eighth grade had sold 225 tickets and the seventh grade had sold 200 tickets. Complete the investigation below to find which grade sold the greater percent of tickets. Find the number of sections to shade for each bar. Then shade the sections Eighth grade:Seventh grade: 225 30 = 200 25 = The eighth grade sold % of their tickets. The seventh grade sold % of their tickets. The ________________ grade sold the greater percent of their tickets.

6. Ratios and Proportional Relationships Course 2, Inquiry Lab before Lesson 2-3 HOW is percent used to solve real-world problems?