Length and breadth of the floor of a room are 5m and 3m, respectively. Forty tiles, each with area m² are used to cover the floor partially.

Find the ratio of the tiled and the non tiled portion of the floor.

Length of the floor = 5 m

Width of the floor = 3 m

Area of the Room = length× width

Area of the room = 5× 3 = 15 m²

Area of one tile =

Area of 40 tiles =

Total 2.5 m² area will be covered by tiles.

Area not covered by tile = (15 – 2.5) = 12.5 m²

Ratio of the tiled and the non-tiled portion of the floor

Ratio = 1:5