Percents And Probability Worksheet With Answers - Lesson 12-19 Page 28
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49use a proportion to solve. round your answer to the nearest tenth if necessary.
7.
8.
What is 75% of 4?
One is 4% of what number?
9.
10.
What percent of 300 is 30?
What is 60% of 555?
11.
12.
What percent of 45 is 15?
Six is 10% of what number?
13.
14.
What is 25% of 2,784?
What percent of 30 is 24?
15.
16.
What is 125% of 60?
Sixty is what percent of 30?
17.
Sandra and Shelly each solved the percent problem a different way. Who is correct? Explain.
Problem: What is 125% of 40?
sandra’s Work
shelly’s Work
125
= 40 __
125
= x __
___
___
100
100
40
x
125x = 4000
100x = 5000
x = 32
x = 50
Art
18.
Arnold surveyed 60 band members about their favorite class other than band. The
6
English
results are shown in the pie chart. Find the percent of students who favor each class.
18
Math
19.
24
Emily has a collection of soccer balls. Twelve of her soccer balls are pink. These
P.E.
12
make up 40% of her collection. How many soccer balls are in Emily’s collection?
20.
The state of Oregon is 97,060 square miles. Find the
percent of area covered by each of the counties below.
Round your answer to the nearest tenth of a percent.
Harney: 10,228 square miles
Klamath: 6,135 square miles
Hood River: 533 square miles
Multnomah: 465 square miles
21.
The Willamette River is about 25% as long as the Columbia River. The Willamette River is 309 miles long.
Find the length of the Columbia River.
I do homework right after school
25%
I do homework right before going to bed 10%
22.
Lola interviewed 40 people about their homework habits.
I do homework at school
40%
She recorded the data as shown. Use the percents to find
I don’t do homework
15%
how many students responded in each category.
Other
10%
23.
When eating at a restaurant, it is common courtesy to leave a 15% tip.
Find the tip to leave for each bill.
a. $12.00
b. $56.00
c. $15.40
d. $18.60
98
Lesson 16 ~ Solving Percents Using Proportions
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