Percents
Percent Problems
Percent of Change
Simple Interest
100

What is 5% of 80?

4

100

Your food costs are $2,500. Your total food sales are $17,500. To the nearest percent, what percent of your food sales does your food costs represent?

14%

100

What is the percent of change 22 to 4 to the nearest tenth of a percent?

81.8% 

100

What form does the rate need to be in to use it in the formula for simple interest? 

A decimal

200

40% of what is 90?

225

200

You have a large container of olive oil that holds 28 quarts. 25% of the olive oil remains. How many quarts of olive oil are left?

7 Quarts

200

What is the percent of change from 78 to 80 to the nearest tenth of a percent?

2.6% 

200

What is the formula for simple interest?

I = P • r • t

300

80% of what is 60?

75

300

A serving of ice cream contains 1,200 calories. 144 calories come from fat. What percent of the calories come from fat?

12%

300

What is the percent of change from 85 to 44 to the nearest tenth of a percent?

48.2% decrease

300

Find the interest on the loan if you borrowed $2,000 at 8% for 1 year 

I = P x r x t

$160

400

What percent of 156 is 65 to the nearest tenth?

41.7%

400

You and your friends go out to eat. Your bill is $16. You want to tip 15%. What is the amount of the tip?

$2.40

400

Tom's weekly salary increase from $240 a week to $288 a week. What was the percent of change?

20%

400

Find the principal:

Interest: $30

Rate: 4%

T: 2 years

$375

500

What is 29% of 71?

20.59

500

You and your friends go out to eat. Your bill is $24. You want to tip 20%. What is the amount of the total bill?

$28.80

500

Kate had $2,251.35 in her bank account. Currently, she has $1,975.86 in her account. Find the percent of change rounded to the nearest tenth of a percent.

12.2%

500

Bob deposits $5,000 in an account that earns 2% simple interest. How long will it take for his account balance to reach $5,500?

5 years

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