Proportions Math

A recipe calls for 2 cups of flour for every 3 cups of sugar. If you want to use 10 cups of sugar, how many cups of flour do you need?

• 6

• 6.67

• 7

• 8

What is 30% of 50?

• 15

• 20

• 25

• 30

In a class, the ratio of boys to girls is 3:4. If there are 28 girls, how many boys are there?

• 21

• 24

• 18

• 22

A map scale shows that 2 inches equals 100 miles. How many miles are represented by 7 inches on the map?

• 250

• 350

• 450

• 550

If 8 out of 20 students in a class are boys, what percent of the class is boys?

• 40%

• 50%

• 60%

• 30%

If a car travels 150 miles in 3 hours, how many miles will it travel in 7 hours at the same speed?

• 350

• 300

• 250

• 400

A bag contains 60 marbles, some of which are red and the rest are blue. If the ratio of red to blue marbles is 1:2, how many red marbles are there?

• 20

• 30

• 40

• 50

What is 45% of 80?

• 36

• 40

• 45

• 35

A school's basketball team won 15 out of its 20 games. What percent of the games did the team win?

• 75%

• 80%

• 85%

• 70%

If 3 notebooks cost $4.50, how much do 5 notebooks cost?

• $7.00

• $7.50

• $8.00

• $6.50