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Envision Math 2.0: Grade 7, Volume 1
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Envision Math 2.0: Grade 7, Volume 1 View details
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Exercise 2 Page 180

Set up a proportion.

156.8

Practice makes perfect
The ratio of a part of a whole equal to the ratio of a percent out of 100. part/whole=percent/100 ⇔ a/b=p/100 To find 160 % of 98, we substitute p= 160 and b= 98 into the formula and solve for a using the Properties of Equality.
a/b=p/100
SubstituteII

p= 160, b= 98

a/98=160/100
â–Ľ
Solve for b
MultEqn

LHS * 98=RHS* 98

a/98* 98 = 160/100* 98
FracMultDenomToNumber

a/1046* 1046 = a

a = 160/100* 98
CalcQuot

Calculate quotient

a = 1.6 * 98
Multiply

Multiply

a = 156.8
We found that 156.8 is 160 % of 98.
Subchapter links expand_more
arrow_right Topic Essential Question p.179
1
arrow_right Vocabulary Review p.179
1
arrow_right Use Vocabulary in Writing p.179
1
arrow_right 1 Analyze Percent of Numbers p.180
1
Analyze Percent of Numbers 2 (Page 180)
3
arrow_right 2 Connect Percent and Proportion p.180
Connect Percent and Proportion 1 (Page 180)
2
3
arrow_right 3 Represent and Use the Percent Equation p.181
Represent and Use the Percent Equation 1 (Page 181)
Represent and Use the Percent Equation 2 (Page 181)
arrow_right 4 Solve Percent Change and Percent Error Problems p.181
1
2
arrow_right 5 Solve Markup and Markdown Problems p.182
1
2
arrow_right 6 Solve Simple Interest Problems p.182
1
2