Real-Life Applications of Rational Expressions & Equations

A recipe requires 3/4 cup of sugar. If you want to make 2/3 of the recipe, how much sugar do you need?

• 1 cup

• 3/4 cup

• 1/3 cup

• 1/2 cup

A car travels 120 miles in 2 hours. What is the car's speed in miles per hour expressed as a rational expression?

• 90

• 120

• 60

• 30

If a tank can hold 5/6 of a gallon of water, how many tanks are needed to hold 3 gallons?

• 2

• 3

• 5

• 4

A piece of ribbon is 2/5 of a yard long. If you cut it into pieces that are 1/10 of a yard long, how many pieces can you cut?

• 5

• 2

• 4

• 3

A baker has 3/4 of a cake left. If he wants to divide it equally among 3 friends, how much cake will each friend receive?

• 1/2

• 1/4

• 1/3

• 2/3

A swimming pool is filled with water at a rate of 1/2 gallon per minute. How long will it take to fill the pool with 5 gallons of water?

• 20 minutes

• 10 minutes

• 5 minutes

• 15 minutes

If a car uses 1/3 of a tank of gas to travel 60 miles, how far can it travel on a full tank?

• 180 miles

• 240 miles

• 150 miles

• 120 miles

A garden is 1/2 acre in size. If you want to plant flowers in 1/4 of the garden, how much area will be used for flowers?

• 1/2 acre

• 1/4 acre

• 3/8 acre

• 1/8 acre

A recipe calls for 2/3 cup of flour. If you want to triple the recipe, how much flour do you need?

• 3/4 cup

• 1 cup

• 2 cups

• 1 1/3 cups

A cyclist travels 15 miles in 1/5 of an hour. What is the cyclist's speed in miles per hour as a rational expression?

• 60

• 45

• 90

• 75