Percent Proportion

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Show your work for each problem.

1.
Which proportion matches the question "What percent of 50 is 20?"
1. a) $\frac{20}{100} = \frac{p}{50}$
2. b) $\frac{20}{50} = \frac{p}{100}$
3. c) $\frac{50}{20} = \frac{p}{100}$
4. d) $\frac{p}{20} = \frac{50}{100}$
2.
What percent of 20 is 5? Enter the number without the % sign.
3.
Use the proportion $\frac{x}{85} = \frac{40}{100}$ to find 40% of 85.
4.
In "18 is 60% of what number?", which number is the part?
1. a)60
2. b)100
3. c)18
4. d)1080
5.
What percent of 80 is 20?
6.
9 is 30% of what number?
7.
24 is 40% of what number?
8.
Ana scored 27 out of 36 points on a test. What percent is that?
1. a)70%
2. b)75%
3. c)72%
4. d)60%
9.
Tom answered 42 of 50 questions correctly. What percent did he get right?
10.
In a survey, 63 students chose pizza as their favorite lunch. That is 35% of the students surveyed. How many students were surveyed?
11.
Use the percent proportion to find 15% of 260.
12.
63 is what percent of 90? Enter the number without the % sign.
13.
Which equation do you get when you cross multiply $\frac{15}{x} = \frac{30}{100}$ ?
1. a) $15x = 3000$
2. b) $100x = 450$
3. c) $45x = 100$
4. d) $30x = 1500$
14.
A pair of shoes is 24% off and you save 18 dollars. What was the original price, and what do you pay? Give the price you pay in dollars.
15.
In a grade, 12 students walk to school. That is 15% of all students in the grade. How many students in the grade do NOT walk to school?
16.
In a poll of 120 people, 54 said they prefer tea to coffee. What percent prefer tea?
1. a)40%
2. b)45%
3. c)42%
4. d)54%
17.
2.4 is 8% of what number?
18.
Ana scored 18 out of 24 on test A and 34 out of 40 on test B. Find both percents. What is the higher percent?