Tile Adhesive Maths: Coverage, Exclusions and Whole Bags

Tile Adhesive Maths: Coverage, Exclusions and Whole Bags

Original quantitative topic practice in English. All 24 questions are included in a shuffled order. Each question supplies its own data and model assumptions; use only those assumptions. Choose one answer. Practice target: 20/24, not an official examination pass mark. Keep full intermediate precision. These exercises cover the calculation scope in the title; they do not constitute a full Red Seal examination, trade qualification, site design or operating specification.
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A tiling job includes 4 identical walls, each 4.5 m wide and 2.5 m high. Exclude a total 5.5 m² of openings across the whole job. The supplied product estimate is 3.4 kg/m² for the chosen conditions. Add 10% material reserve. Buy whole 20 kg bags at $30 each. The consumption rate is an exercise input, not a universal application rate. Calculate the whole bags to purchase. Keep intermediate values unrounded; round the final answer to 4 decimal places if needed.