7th Grade Math

Get ConnectED

Proportions and Equations

PART A BCDE

Multi-Part

Lesson 2

GLE 0706.2.4

Use ratios, rates and

percents to solve single-

and multi-step problems

in various contexts. Also

addresses GLE 0706.1.8.

Lesson 2A Proportions and Equations 331

Find Percents

TICKETS 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. Which grade sold the greater percent of tickets?

What do you need to find? which grade sold the greater

percent of tickets

Make a bar diagram for each grade to show 100%.

Divide each bar into 10 equal parts to show 10%.

Find the value of each part.

8th grade: 300 ÷ 10 = 30 7th grade: 250 ÷ 10 = 25

Shade each bar to represent the number of tickets sold.

Eighth grade: 225 ÷ 30 = 7.5 Shade 7.5 parts.

Seventh grade: 200 ÷ 25 = 8 Shade 8 parts.

Since 80% > 75%, the seventh grade sold the greater percent.

the Results

1. Why is the percent for the seventh-grade sales greater even
   though they sold fewer tickets?


2. SCHOOL Vanlue Middle School has 600 students and Memorial
   Middle School has 450 students. Vanlue has 270 girls and
   Memorial has 243 girls. Draw a bar diagram to determine which
   school has the greater percent of girls. Explain.

Main Idea

Solve problems

involving percents.

300 tickets

225 tickets

30

75%

10 0 %

250 tickets

200 tickets

25

80%

10 0 %

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