Ratio & proportion

A triangle is 4 in tall and 3 in wide. If it is enlarged to a height of 8 in, then how wide will it be?

• 6
• 10
• 14

A scale drawing of a billboard uses the scale 4 cm:9 ft. The length of the billboard in the drawing is 11 cm. How long is the actual billboard?

• 13 ft
• 20.75 ft
• 24.75 ft
• 22 ft

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk
• 1.75 cups milk
• 2 cups flour
• 2.25 cups milk

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480
• 1960
• 84
• 25

Madi took a test.  Out of 12 questions, she answered nine correctly.  What percent of the questions did she get correct?

• 9%
• 50%
• 75%
• 80%

 if there are 5 boys for every 7 girls in math class, how many boys are there if there are 35 girls?

• 20
• 25
• 30
• 35

On last week’s maths test Carol had 21 correct out of 25 problems. What percent grade did she receive?

• 42
• 80
• 84
• 92

Pat needs 14 sticks of pepperoni to make 28 pizzas.  How many sticks of pepperoni are needed to make 36 pizzas?  

• 15 pizzas
• 252 sticks
• 18 sticks
• 18 pizzas

A car travels 420 miles in 8 hours.  If the car continues at the same rate, how far will it travel in 12 hours?

• 630 miles
• 630 hours
• 600 miles
• 540 hours

The ratio of students to laptops in a school is 3:2. If there are 1,200 students, how many laptops are there?

• 800

• 1,800

• 1,200

• 900