Percent Practice Problems

What is the ratio of 6 shaded squares to 9 unshaded squares?

• 6:9

• 2:3

• 3:2

• 6 to 3

Answer explanation

The ratio of shaded to unshaded squares is 6:9. To simplify, divide both numbers by 3, resulting in 2:3. Thus, the correct answer is 2:3.

Which of the following represents 40% as a fraction in simplest form?

• 40/100

• 4/10

• 2/5

• 1/4

Answer explanation

To convert 40% to a fraction, write it as 40/100. Simplifying this by dividing both the numerator and denominator by 20 gives 2/5, which is the simplest form. Thus, the correct answer is 2/5.

If a store sells 15 blue pens, 20 black pens, and 5 red pens, what is the ratio of blue pens to total pens?

• 15:20

• 15:25

• 3:8

• 1:3

Answer explanation

To find the ratio of blue pens to total pens, first calculate the total: 15 + 20 + 5 = 40. The ratio is 15:40, which simplifies to 3:8. Thus, the correct answer is 3:8.

What percent represents the fraction 7/10?

• 70%

• 7%

• 0.7%

• 30%

Answer explanation

To convert the fraction 7/10 to a percentage, multiply by 100. Thus, (7/10) * 100 = 70%. Therefore, the correct answer is 70%.

A class has 25 students. If 10 of them are wearing blue shirts, what percent of the class is wearing blue shirts?

• 10%

• 25%

• 40%

• 50%

Answer explanation

To find the percentage of students wearing blue shirts, divide the number of students in blue shirts (10) by the total number of students (25) and multiply by 100. (10/25) * 100 = 40%. Thus, 40% of the class is wearing blue shirts.

What is 0.75 as a percent?

• 0.75%

• 7.5%

• 75%

• 750%

Answer explanation

To convert 0.75 to a percent, multiply by 100. Thus, 0.75 x 100 = 75%. Therefore, the correct answer is 75%.

What is 2/5 written as a percent?

• 20%

• 25%

• 40%

• 50%

Answer explanation

To convert 2/5 to a percent, divide 2 by 5 to get 0.4, then multiply by 100. This gives 40%, which is the correct answer.

Which decimal represents 125%?

• 0.125

• 1.25

• 12.5

• 1250

Answer explanation

To convert a percentage to a decimal, divide by 100. Thus, 125% becomes 125 ÷ 100 = 1.25. Therefore, the correct decimal representation of 125% is 1.25.

A football team won 12 out of 20 games. What percent of games did they win?

• 40%

• 50%

• 60%

• 75%

Answer explanation

To find the winning percentage, divide the number of wins (12) by the total games (20) and multiply by 100. (12/20) * 100 = 60%. Therefore, the team won 60% of their games.

A store had a sale where everything was 30% off. If a shirt originally costs $20, how much is the discount?

• $3

• $6

• $10

• $14

Answer explanation

To find the discount, calculate 30% of the original price: 30% of $20 is 0.30 * 20 = $6. Therefore, the discount is $6.