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Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 54 Page 156

The percent proportion is a proportion that equates a part of a whole to a percent out of 100.

170

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. In this exercise, we are given the value a= 102 and the percent p= 60. Therefore, we are looking for the value b.
a/b=p/100
SubstituteII

a= 102, p= 60

102/b=60/100
ReduceFrac

a/b=.a /20./.b /20.

102/b=3/5
MultEqn

LHS * b=RHS* b

102=3/5 * b
MoveRightFacToNum

a/c* b = a* b/c

102=3* b/5
MultEqn

LHS * 5=RHS* 5

510=3b
DivEqn

.LHS /3.=.RHS /3.

170=b
RearrangeEqn

Rearrange equation

b=170
This means that 102 is 60 % of 170.
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Exercises 7 (Page 153)
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