a floor measuring 2 metre by 1.5 metre is to be covered with titles measuring 25 CM by 25 cm find the number of titles required to cover the floor and the cost of the titles at rupees 420 per dozen?
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Step-by-step explanation:
area of floor =2×1.5 =3m²
sides of tile = 25 cm = 0.25 m
area of 1 tile = 0.25×0.25 =0.0625m²
no. of tiles required = area of floor ÷ area of 1 tile
= 3÷0.0625 =48
cost of 12 tiles =420
cost of 1 tile = 420/12 = 35
cost of 48 tiles = 48×35 = Rs. 1680
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