Finding percent of change
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Finding Percent of Change PowerPoint PPT Presentation


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670 – 632 = 38 Find the amount of change. 38 632. n 100.        = Write a proportion. 632 n = 38 ( 100 ) Find the cross products. 632 n 632. 38(100) 632.        = Divide each side by 632. n = 6.01265 Simplify.

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Finding Percent of Change

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Finding percent of change

670 – 632 = 38Find the amount of change.

38

632

n

100

       = Write a proportion.

632n = 38(100)Find the cross products.

632n

632

38(100)

632

       = Divide each side by 632.

n = 6.01265Simplify.

COURSE 2 LESSON 6-8

Finding Percent of Change

Last year, a school had 632 students. This year the school has 670 students. Find the percent of increase in the number of students.

The number of students increased by 6%.

6-8


Finding percent of change1

13,775 – 10,590 = 3,185Find the amount of markup.

3,185

10,590

n

100

       = Write a proportion.

10,590n = 3,185(100) Find the cross products.

10,590n

10,590

3,185(100)

10,590

       = Divide both sides by 10,590.

n 30 Simplify.

COURSE 2 LESSON 6-8

Finding Percent of Change

Find the percent markup for a car that a dealer buys for $10,590 and sells for $13,775.

The percent markup is 30%.

6-8


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