Auntie Lim is tiling her kitchen floor with rectangular tiles. The perimeter of each tile is 36 cm. The length of each tile is twice its width. What is the width of each tile?
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Worked Solution
Step 1: Let the width = w. Then the length = 2w.
Step 2: Write the perimeter equation.
Perimeter = 2 × (length + width)
36 = 2 × (2w + w)
36 = 2 × 3w
36 = 6w
Step 3: Solve for w.
w = 36 ÷ 6 = 6 cm
Step 4: Check.
Length = 2 × 6 = 12 cm
Perimeter = 2 × (12 + 6) = 2 × 18 = 36 cm ✓
Answer: The width is 6 cm.
Correct answer: 6 cm
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