Percents And Probability Worksheet With Answers - Lesson 12-19 Page 27
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49In 2006, people over the age of 65 made up 13% of
examPle 4
the population in oregon. The total population in
oregon in 2006 was approximately 3,700,000.
Find the number of people over 65.
13
___
s
Write the percent over 100.
olution
100
Let x represent the number of
people over 65. Write a proportion
13
x
___
______
using the percent ratio and the
=
100
3700000
total population.
Use cross products to solve.
100x = 48100000
x = 481000
There were approximately 481,000 people over age 65 in Oregon in 2006.
exercises
Identify the percent of unit squares that are shaded. If necessary, use a proportion to find the percent.
1.
2.
3.
4.
5.
Draw a 5 by 6 grid. Shade in 40% of the squares.
6.
Draw a 3 by 5 grid. Shade in 70% of the squares. Explain in words how many squares are shaded.
97
Lesson 16 ~ Solving Percents Using Proportions
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