Percents And Probability Worksheet With Answers - Lesson 12-19 Page 32
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49exercises
use the percent equation to solve. round your answer to the nearest tenth if necessary.
1.
2.
What is 75% of 8?
One is 2% of what number?
3.
4.
What percent of 150 is 30?
What is 65% of 520?
5.
6.
What percent of 39 is 13?
Four is 10% of what number?
7.
8.
What is 15% of 2,680?
What percent of 36 is 9?
9.
10.
What is 125% of 80?
Seventy-two is what percent of 36?
11.
Nathan and Alex each solved this percent problem a different way.
Problem: 30 is 75% of what number?
a. Which answer is correct? Explain.
nathan’s Work
Alex’s Work
b. Find the mistake in the work of the student who answered
75
= 30 __ x
___
x = 75% ∙ 30
incorrectly. Explain the mistake, fix it and solve the problem.
100
x = 0.75 ∙ 30
x = 22.5
75x = 3000
x = 40
12.
A person ate 2,000 calories in a day. Of those calories, 35% were from fat. How many calories
were from fat?
13.
Tim ran for president of the student council. Four hundred eighty-one students
voted for him, which was 52% of the votes received. How many students voted
in the election?
14.
A salesman earns 3% commission for every television he sells. Yesterday, he sold
a large screen television for $2,400. How much money did the salesperson make
on commission?
15.
Before the football game the Booster Club sold hot dogs and hamburgers which
had been donated to them. They sold 120 hot dogs and 75 hamburgers. The hot dogs cost $1.50 each
and the hamburgers cost $2.00 each.
a. How much money did the Booster Club make selling hot dogs?
b. How much money did the Booster Club make selling hamburgers?
c. What percent of the money made came from the sale of hot dogs?
d. What percent of the food sold were hot dogs?
e. Why don’t the answers in part b and part c match?
102
Lesson 17 ~ Solving Percents Using Equations
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