Benny is 12 years old and his mom is 48 years old. As Benny and his mom get older, Benny thinks that the percent of difference between their ages will decrease as well.

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Benny is 12 years old and his mom is 48 years old. As Benny and his mom get older, Benny thinks that the percent of difference between their ages will decrease as well.
Lesson 3
7.4
A STORY OF RATIOS
Lesson Summary
Visual models or arithmetic methods can be used to solve problems that compare quantities with
percents.
Equations can be used to solve percent problems using the basic equation
Quantity = Percent × Whole.
Quantity in the new percent formula is the equivalent of part in the original percent formula.
Problem Set
Solve each problem using an equation.
49.5 is what percent of 33? I S0%
b. 72 is what percent of 180? y07.
What percent of 80 is 90? 38. 9 %
This year, Benny is 12 years old, and his mom is 48 years old.
What percent of his mom's age is Benny's age? 237
b. What percent of Benny's age is his mom's age? Y007.
C In two years, what percent of his age will Benny's mom's age be at that time? 3 57. 197
d. In 10 years, what percent will Benny's mom's age be of his age? 763.63%
In how many years will Benny be 50% of his mom's age? 2 years
As Benny and his mom get older, Benny thinks that the percent of difference between their ages will decrease
as well. Do you agree or disagree? Explain your reasoning.
This year, Benny is 12 years old. His brother Lenny's age is 175% of Benny's age. How old is Lenny?
When Benny's sister Penny is 24, Benny's age will be 125% of her age.
How old will Benny be then?
If Benny is 12 years old now, how old is Penny now? Explain your reasoning.
5. Benny's age is currently 200% of his sister Jenny's age. What percent of Benny's age will Jenny's age be in 4 years?
Lesson 3:
S.18
Comparing Quantities with Percent
EUREKA
MATH
©2015 Great Mi
Transcribed Image Text:Lesson 3 7.4 A STORY OF RATIOS Lesson Summary Visual models or arithmetic methods can be used to solve problems that compare quantities with percents. Equations can be used to solve percent problems using the basic equation Quantity = Percent × Whole. Quantity in the new percent formula is the equivalent of part in the original percent formula. Problem Set Solve each problem using an equation. 49.5 is what percent of 33? I S0% b. 72 is what percent of 180? y07. What percent of 80 is 90? 38. 9 % This year, Benny is 12 years old, and his mom is 48 years old. What percent of his mom's age is Benny's age? 237 b. What percent of Benny's age is his mom's age? Y007. C In two years, what percent of his age will Benny's mom's age be at that time? 3 57. 197 d. In 10 years, what percent will Benny's mom's age be of his age? 763.63% In how many years will Benny be 50% of his mom's age? 2 years As Benny and his mom get older, Benny thinks that the percent of difference between their ages will decrease as well. Do you agree or disagree? Explain your reasoning. This year, Benny is 12 years old. His brother Lenny's age is 175% of Benny's age. How old is Lenny? When Benny's sister Penny is 24, Benny's age will be 125% of her age. How old will Benny be then? If Benny is 12 years old now, how old is Penny now? Explain your reasoning. 5. Benny's age is currently 200% of his sister Jenny's age. What percent of Benny's age will Jenny's age be in 4 years? Lesson 3: S.18 Comparing Quantities with Percent EUREKA MATH ©2015 Great Mi
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