The number of learners at a school changed from 90 to 108. What is the percentage increase?
Answer and explanation
Correct answer: C. 20%
- Step 1: The change is 18 learners.
- Step 2: Percentage change = change ÷ original × 100 = 18 ÷ 90 × 100 = 20%.
Answer
20%.
Why not the others: 18%: the actual difference was used as the percentage. 16,7%: the change was divided by the new value instead of the original value. 9,1%: the change was divided by the sum of both values.
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