Proportional Reasoning Pre-Algebra

solve the proportion

14/2 = x/6

• x = 14

• x = 42

• x = 18

• x = 28

Write the ratio as a fraction in simplest form.

3 ft. to 9 ft.

• 3 to 9

• 9 to 3

• 1 to 3

• 3 to 1

Write the ratio of 7th graders to 8th graders

• 19 to 15

• 15 to 19

• 19 to 27

• 19 to 12

Solve the proportion

2.5/6 = 4/x

• x = 9

• x = 96

• x = 9.6

• x = 6

solve the proportion

9/14 = s/42

• s = 36

• s = 18

• s = 37

• s = 27

solve the proportion

r/8 = 4/2

• r = 16

• r = 8

• r = 10

• r = 12

What is the unit rate for meters per second. If a car travels 546 meters in 26 seconds?

• 0.0476 meters per second

• 14196 meters per second

• 210 meters per second

• 21 meters per second

Leo reads 12 pages in 1/2 hour.

• 6 pages in an hour

• 24 pages in an hour

• 18 pages in an hour

• 20 pages in an hour

Yesterday, Jack drove 44.5 miles. He used 1.25 gallons gasoline. What is the unit rate for miles per gallon?

• 355.6 miles

• 3.56 miles

• 35.6 miles

• 365 miles

A box of cereal states that there are 90 calories in a 1/2 cup serving.

a. What is the unit rate for calories per cup?

• 9 calories

• 90 calories

• 45 calories

• 180 calories