A pandan cake recipe uses flour and sugar in the ratio 4 : 3. Mei Ling uses 540 g of flour. After baking, she eats 1/3 of the sugar portion she used. How many grams of sugar remain?
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Worked Solution
Step 1: Flour : Sugar = 4 : 3.
Step 2: Sugar used = (3/4) × 540 = 405 g.
Step 3: Mei Ling eats 1/3 of the sugar: eaten = (1/3) × 405 = 135 g.
Step 4: Sugar remaining = 405 − 135 = 270 g.
(Alternatively: remaining = (2/3) × 405 = 270 g.)
Correct answer: 270 g
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