Rational Expressions: Real-Life Applications & Solutions

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

• 2 cups

• 1 1/2 cups

• 1 cup

• 1 7/8 cups

If a car travels 120 miles in 2 hours, what is the average speed in miles per hour?

• 60 miles per hour

• 75 miles per hour

• 100 miles per hour

• 50 miles per hour

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 if both pipes are used together?

• 12/7 hours or approximately 1.71 hours

• 2 hours

• 5 hours

• 3.5 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?

• 2

• 4

• 1

• 3

A recipe calls for 2/3 cup of flour for 1 batch of cookies. How much flour is needed for 4 batches?

• 1 and 1/3 cups

• 2 and 2/3 cups

• 3 cups

• 4 cups

If a person can read 1/5 of a book in 2 hours, how long will it take to read the entire book?

• 10 hours

• 8 hours

• 5 hours

• 15 hours

A water tank can be emptied in 5 hours. If it is currently 3/4 full, how long will it take to empty it?

• 3.75 hours

• 5 hours

• 4 hours

• 2 hours

A car can travel 1/2 of a mile on 1/8 of a gallon of gas. How many miles can it travel on 1 gallon?

• 6 miles

• 4 miles

• 2 miles

• 8 miles

If a worker can complete 3/4 of a project in 6 hours, how long will it take to complete the entire project?

• 12 hours

• 10 hours

• 6 hours

• 8 hours

A recipe requires 1/2 cup of oil for 3 servings. How much oil is needed for 9 servings?

• 1.5 cups of oil

• 3 cups of oil

• 1 cup of oil

• 2 cups of oil