Efficiency of Machines Quick Check

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Question
Which car has the greatest efficiency?(1 point)
Responses

a 1,200 kg car that travels 20 km per liter of fuel
a 1,200 kg car that travels 20 km per liter of fuel

a 900 kg car that travels 20 km per liter of fuel
a 900 kg car that travels 20 km per liter of fuel

a 900 kg car that travels 15 km per liter of fuel
a 900 kg car that travels 15 km per liter of fuel

a 1,200 kg car that travels 15 km per liter of fuel

The answer is "1,200 kg car that travels 20 km per liter of fuel".

The car that has the greatest efficiency is:

a 900 kg car that travels 20 km per liter of fuel