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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

10. Change Expressed as a Percent

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Exercise 45 Page 150

Think of 8 as the part and 12 as the whole.

≈ 67 %

Practice makes perfect

To find what percent of 12 8 is, we can use a percent proportion. a/b=p/100 Here, a is the part of the whole and b is the whole value. By substituting a= 8 and b= 12 into the formula, we can determine what percent of 12 8 is.

a/b=p/100

a= 8, b= 12

8/12=p/100

Cross multiply

800=12p

Rearrange equation

12p=800

.LHS /12.=.RHS /12.

p=66.666666...

Round to nearest integer

p≈ 67

Therefore, 8 is approximately 67 % of 12.

Subchapter links

Lesson Check p.148

Practice and Problem-Solving Exercises p.148-150

Standardized Test Prep p.150

Mixed Review p.150