A quantity increases from to . By what percent did it increase?
Answer and explanation
Correct answer: A. 50%
- Step 1: Calculate the absolute increase: .
- Step 2: Divide the increase by the initial value: .
- Step 3: Convert to a percentage: .
Answer
50%.
Why not the others: - 33% divides the increase by the final quantity () instead of the initial quantity . - 45% is an arithmetic approximation miscalculation. - 60% calculates the ratio of the increase to the sum or an arbitrary estimate.
Practise more Percentages and percent change.
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