Proportional Relationships

Josh bought a pizza with eight slices of pizza for $12. What is the cost per slice of pizza?

• $12

• $1.50

• $3

• $1

Johnny read 280 pages in 4 hours.

How many pages per hour did Johnny read?

• 276

• 14

• 70

• 60

5/9 and 7/12

• Proportional

• Not Proportional

Adalynn planted 20 peach trees over 400 feet. Dwight planted 18 plum trees over 270 feet.

• Proportional

• Not Proportional

A car travels 26 miles on 1 gallon of gas. Jorge drives 130 miles and uses 5 gallons of gas.

• Proportional

• Not Proportional

De’Andrea is studying metals. He finds out that the ratio of chromium to nickel in stainless steel is 9 to 4. De’Andrea adds 27 pounds of chromium and 12 pounds of nickel to his forge.

• Proportional

• Not Proportional

Alexis likes her drinks to have a ratio of liquid to ice of 1 to 3. A fast-food restaurant puts

16 oz of ice in her 32-oz cup.

• Proportional

• Not Proportional

A salad dressing recipe uses 10 parts oil, 4 parts vinegar, and 2 parts honey. Which of the following sets of ingredients are in a proportional relationship with the recipe?

• 6 Tbsp oil, 1.5 Tbsp vinegar, 1 Tbsp honey

• 15 Tbsp oil, 6 Tbsp vinegar, 3 Tbsp honey

• 24 Tbsp oil, 8.5 Tbsp vinegar, 4.5 Tbsp honey

A recipe for 1 batch of cookies is 2.5 eggs and 4 cups of flour. If you wanted 3 bathes of cookies, how many eggs and cups of flour do you NEED?

• 5 eggs and 8 cups of flour

• 5 eggs and 12 cups of flour

• 7.5 eggs and 8 cups of flour

• 7.5 eggs and 12 cups of flour