Unit Rates and Economic Comparisons

Mr. Chen guides students through math problems involving unit rate calculations. He compares the mileage of two cars and the cost of air freshener refills, demonstrating how to determine the better option based on unit rates. The lesson concludes with a call to action to like and subscribe for more tutorials.

What should you do before watching the solutions in the video?

• Skip to the end of the video.

• Pause the video and try the problems yourself.

• Watch the video without pausing.

• Ask a friend for the answers.

Which car has better mileage: Car A (125 miles with 5 gallons) or Car B (120 miles with 6 gallons)?

• Car B

• Car A

• Both have the same mileage

• Not enough information

Why is Car A considered better in the first comparison?

• It uses more gallons.

• It travels fewer miles.

• It travels more miles with fewer gallons.

• It is cheaper.

How do you calculate the unit rate for Car A in the second comparison?

• Add miles and gallons.

• Divide miles by gallons.

• Subtract gallons from miles.

• Multiply miles by gallons.

What is the unit rate for Car A in the second comparison (300 miles with 8 gallons)?

• 32 miles per gallon

• 37.5 miles per gallon

• 40 miles per gallon

• 35 miles per gallon

Which car has better gas mileage in the second comparison?

• Car A

• Not enough information

• Car B

• Both have the same mileage

What is the unit rate for Car B in the second comparison (320 miles with 10 gallons)?

• 32 miles per gallon

• 37.5 miles per gallon

• 35 miles per gallon

• 40 miles per gallon

What is the cost per refill for Air Freshener A?

• $5

• $3

• $2

• $4

Which air freshener option is more economical?

• Option A

• Not enough information

• Both are the same

• Option B

How do you determine the more economical air freshener option?

• By comparing the cost per refill.

• By comparing the total cost.

• By comparing the brand popularity.

• By comparing the number of refills.