Problems Involving Percents

The tail of the spider monkey is 64% of the length shown. What is the length of its tail?

• The length of the spider monkey’s tail is 34.8 inches.

• The length of the spider monkey’s tail is 36.6 inches.

• The length of the spider monkey’s tail is 35.2 inches.

• The length of the spider monkey’s tail is 33.6 inches.

Michael spent $210 on school supplies and books. This amount was 30% of his savings. How much was his savings?

• $700

• $63

• $630

• $763

A waitress recieved a 15% tip. If her tip was $8.25 how much was the bill?

• $1.23

• $55

• $16.50

• $1.24

Skateboards are on slae for 30% off. The regular price of a skateboard is $89,what is the discounted price?

• $26.70

• $36.70

• $62.30

• $54.30

Bill is in a class of 23 girls and 27 boys. 40% of all the students in his class take the bus to school. How many students take the bus to school?

• 15

• 20

• 30

• 35

After dining at your favorite restaurant, your bill arrives for $44.97. As usual, the service was excellent, and the food was delicious! ESTIMATE a 20% tip as well as the total cost of your meal. (Hint: pay attention to the questions being asked!)

• $9, $55

• $4; $48

• $9; $45

• $20; $65

There are 100 cookies and 80 brownies on a desserts, 12 cookies and 24 brownies contain nuts. What percentage of these desserts contain nuts?

• 12%

• 30%

• 20%

• 42%

Find the percent of increase from 10 to 25

• 150%

• 100%

• 25%

• 50%

Answer explanation

25 - 10

10

x 100% = 150%

76 is what percent 85

• 0.889

• 0.98

• 0.9

• 0.89

Find the percent of decrease from 20 to 15.