PSLE Math 2021 Paper 2 Question 8

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(Nick and Xinyi Money Percentage Question)

PSLE Math 2021 Paper 2 Question 8

$Handwritten math notes on a sheet of lined paper showing calculations about fan discounts and prices, with calculations and percentages written in blue ink.$

a) Ans: $170
1st → 100% - 55% = 45%
2nd 100% - 70% = 30%
45% + 30% = 75% paid

75% of a fan → 127.50
1% → 127.50 ÷ 75 = 1.70
100% of a fan → 1.70 × 100 = 170

b) Ans: $212.50
Nick (200%) → 170 × 2 = 340
340 (Nick) - 127.50 (Xinyi) = 212.50 (more)