The table shows the electricity consumption (in kWh) of four households over two quarters.

Which household reduced its consumption the most in percentage terms?
Show answer & explanation
Correct answer: A
Explanation
Correct Answer: H1
Solution:
Percentage Reduction = (Q1 − Q2) / Q1 × 100
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H1: (250 − 220) / 250 × 100 = 12%
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H2: (300 − 280) / 300 × 100 = 6.67%
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H3: (270 − 240) / 270 × 100 = 11.11%
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H4: (260 − 230) / 260 × 100 = 11.54%
Therefore, H1 reduced its electricity consumption the most, by 12%.