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St Nicholas 2025 P6 Maths Prelim — Paper 2 Q17c Solution

Paper 2 · Q17c · 1 mark · Area and Perimeter

Question

For the tiled footpath, (c) All the tiles on the footpath need to be replaced. A circular tile costs \$3.20 and a rectangular tile costs \$1.80. What is the total cost to replace all the tiles on the footpath?
Answer: $560

Worked solution

  1. Circular tiles $= 40$, rectangular tiles $= 280 - 40 = 240$. Cost $= 240 \times \$1.80 + 40 \times \$3.20 = \$432 + \$128 = \$560$.

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