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प्रश्न
Length and breadth of the floor of a room are 5 m and 3 m, respectively. forty tiles, each with area `1/16` m2 are used to cover the floor partially. Find the ratio of the tiled and the non tiled portion of the floor.
उत्तर
Given, Length of the floor of a room = 5 m
Breadth of the floor of a room = 3 m
Area of the room = Length × Breadth
= 5 × 3 = 15 m2
∵ Area of 1 title = `1/16` m2
∴ Area of 40 tiles = `1/16 xx 40` = 2.5 m2
Area covered by tiles = 2.5 m2
Area not covered by tiles = (15 – 2.5) = 12.5 m2
Ratio of the tiled to non-tiled portion = `(2.5 m^2)/(12.5 m^2) = 25/125 = 1/5` = 1.5
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