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


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