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Question 41

A car travels 240 km on 12 litres. A learner reports 20 litres per km after calculating 240 divided by 12. Which label corrects the unit-rate error?

  1. 20 litres per km
  2. 0.05 km per litre
  3. 228 km per litre
  4. 20 km per litreCorrect answer

Explanation

The calculation divides kilometres by litres, so its result must be labeled 20 km per litre. Calling it litres per km reverses the units; that reciprocal rate would require dividing 12 by 240 instead.

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Question 41: A car travels 240 km on 12 litres. A learner reports 20… · Ratios and Proportions · Questena