Rational Expressions: Real-Life Applications & Solutions

A recipe requires 3/4 cup of sugar for 2 batches of cookies. How much sugar is needed for 5 batches?

• 1 cup

• 2 cups

• 1 7/8 cups

• 1 1/2 cups

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

• 60

• 120

• 90

• 30

If a tank can be filled in 3 hours by one pipe and in 4 hours by another, how long will it take to fill the tank using both pipes together?

• 5 hours

• 3.5 hours

• 2 hours

• 1.71 hours

A gardener has 1/2 of a bag of fertilizer. If he uses 1/4 of the bag for each plant, how many plants can he fertilize?

• 1

• 3

• 4

• 2

A school is planning a field trip for 120 students. If each bus can hold 15 students, how many buses are needed?

• 8

• 12

• 10

• 6

A recipe calls for 2/3 cup of oil for 1/2 of a cake. How much oil is needed for a whole cake?

• 3/4 cup of oil

• 2 cups of oil

• 1 cup of oil

• 1 and 1/3 cups of oil

If a car uses 1/5 of a tank of gas to travel 50 miles, how far can it travel on a full tank?

• 150 miles

• 300 miles

• 200 miles

• 250 miles

A swimming pool can be filled in 6 hours by one hose and in 8 hours by another. How long will it take to fill the pool using both hoses?

• 5.5 hours

• 2.5 hours

• 3.43 hours

• 4 hours

A factory produces 300 widgets in 5 hours. How many widgets does it produce per hour as a rational expression?

• 75

• 50

• 100

• 60

If a person can read 1/3 of a book in 2 hours, how long will it take to read the entire book?

• 6 hours

• 10 hours

• 4 hours

• 8 hours