GB-25-05-001 · Tiling and purchases
A floor measures 4.2 m by 2.2 m. Square tiles have side length 20 cm. Tiles are sold in boxes of 22, costing £40 per box. Work out the least cost of buying enough tiles. Ignore gaps and waste.
Area & Tiling Problem Solving
Application of related method — Booklet p. 38
Method
1) Convert floor dimensions to cm and divide by tile side to find tiles along each edge
2) Divide total tiles by box size and round UP
3) Multiply by box price
Worked Example (GB-25-05-001)
1)
There are 21 × 11 = 231 tiles needed.
2)
231/22, rounded up to 11 boxes.
3)
£440.00
Ans =
£440.00