Percentages: WJEC GCSE Intermediate November 2022 Unit 2 Q17

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Intermediate November 2022 Unit 2 Q17

WJECIntermediateCurrent spec2 marksPercentages

17. A number has been increased by 60% to give an answer of 64.
What was the original number? [2]

Mark scheme

Scheme	Marks	Comments
\(\dfrac{64}{160}\) × 100 OR \(\dfrac{64}{1{\cdot}6}\) or equivalent	M1	Do not award M1 for 160% = 64.
= 40	A1	Award M1A1 for an embedded answer (e.g. 40 × 1·6 = 64 or \(\dfrac{64}{40}\) × 100 = 160), BUT only M1A0 if contradicted by stating original amount ≠ 40. Unsupported 40 is awarded M1 A1. Unsupported 40% is awarded M0 A0.