Dean wants to cover part of his floor, the part of the floor that needs covering is in the shape of the triangle like above. The tiles he wants to buy come in packs. Each pack covers 1m2 and costs £35.95. the tiles can be cut and joined. the pack is on offer with one third off the cost of the pack. Work out the lowest cost of the tiles.
Please help me understand how to work this out, pulling my hair out!