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Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
9. Percents
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Exercise 36 Page 142

Use the percent proportion.

What are we finding? A base.
b=24

Practice makes perfect

In the percent proportion, the ratio of the part a to the whole b is equal to the percent p written as a fraction. a/b=p/100 Given any two of these three variables, we can find the third one. Since we are asked of what number? we are trying to find the base. We are given the values p= 250 and a= 60, and we will solve for b.

a/b=p/100
SubstituteII

a= 60, p= 250

60/b=250/100
ReduceFrac

a/b=.a /25./.b /25.

60/b=10/4
MultEqn

LHS * b=RHS* b

60 = 10/4*(b)
MultEqn

LHS * 4=RHS* 4

240=10b
RearrangeEqn

Rearrange equation

10b=240
DivEqn

.LHS /10.=.RHS /10.

b=24

The base is 24.

Subchapter links expand_more
arrow_right Lesson Check p.141
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Lesson Check 2 (Page 141)
Lesson Check 3 (Page 141)
Lesson Check 4 (Page 141)
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arrow_right Practice and Problem-Solving Exercises p.141-143
Practice and Problem-Solving Exercises 9 (Page 141)
Practice and Problem-Solving Exercises 10 (Page 141)
Practice and Problem-Solving Exercises 11 (Page 141)
Practice and Problem-Solving Exercises 12 (Page 141)
Practice and Problem-Solving Exercises 13 (Page 141)
Practice and Problem-Solving Exercises 14 (Page 141)
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Practice and Problem-Solving Exercises 24 (Page 141)
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Practice and Problem-Solving Exercises 31 (Page 142)
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Practice and Problem-Solving Exercises 35 (Page 142)
Practice and Problem-Solving Exercises 36 (Page 142)
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Practice and Problem-Solving Exercises 40 (Page 142)
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arrow_right Standardized Test Prep p.143
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arrow_right Mixed Review p.143
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Mixed Review 59 (Page 143)
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Mixed Review 62 (Page 143)