Answer

	Owners of two different cars reported the following fuel usage for their cars: A Roadrunner used 65 L of gas to travel 600 km. A Pathfinder used 35 L to travel 300 km. Which car has the better fuel efficiency?

Owners of two different cars reported the following fuel usage for their cars:

A Roadrunner used 65 L of gas to travel 600 km.

A Pathfinder used 35 L to travel 300 km.

Which car has the better fuel efficiency?

	The Roadrunner used 65 L to travel 600 km. The Pathfinder, which used 35 L to travel 300 km, would use 70 L to travel 600 km, assuming the same rate. The Roadrunner used less gas to travel the same distance of 600 km. Notice: A unit rate with a second term of 1L or 1 km was not used in this strategy. Comparing the amount of gas used to travel 600 km for each car was an equally valuable strategy.

The Roadrunner used 65 L to travel 600 km.

The Pathfinder, which used 35 L to travel 300 km, would use 70 L to travel 600 km, assuming the same rate.

The Roadrunner used less gas to travel the same distance of 600 km.

Notice: A unit rate with a second term of 1L or 1 km was not used in this strategy. Comparing the amount of gas used to travel 600 km for each car was an equally valuable strategy.

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Unit 4: Proportional Reasoning

Activity 6: Rates

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