Solving Real World Unit Rate Problems

In this math test prep video, the instructor solves a real-world unit rate problem involving Ethan's car. The car travels 30 miles per gallon, and gasoline costs $4 per gallon. Ethan drives 180 miles, and the video demonstrates how to calculate the total cost of gasoline used. The solution involves determining the number of gallons used through cross multiplication and then calculating the total cost by multiplying the gallons by the cost per gallon. The final answer is $24 for the trip.

What is the fuel efficiency of Ethan's car in miles per gallon?

• 6 miles/gallon

• 30 miles/gallon

• 24 miles/gallon

• 180 miles/gallon

How much does one gallon of gasoline cost?

• $4

• $6

• $24

• $180

How many miles did Ethan drive on his trip?

• 30 miles

• 180 miles

• 6 miles

• 24 miles

What is the unit rate of miles per gallon used in the problem?

• 30 miles/gallon

• 24 miles/gallon

• 180 miles/gallon

• 6 miles/gallon

How many gallons of gasoline did Ethan use for his 180-mile trip?

• 30 gallons

• 24 gallons

• 6 gallons

• 1 gallon

What mathematical method is used to find the number of gallons used?

• Division

• Cross multiplication

• Subtraction

• Addition

What is the total cost of the gasoline used for the trip?

• $180

• $4

• $6

• $24

If gasoline costs $4 per gallon, how much would 10 gallons cost?

• $400

• $40

• $10

• $14