Find the cost of flooring a room 6.5m by 5m with square tiles of side 25cm at the rate of Rs 1880/- per 100 tiles.

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Solution

Area of the room $= 6.5 \times 5 = 32.5 m^{2}$
Area of 1 tile $= 25 \times 25 = 625 c m^{2} = 0.0625 m^{2}$
Number of tiles required $= \frac{A r e a o f r o o m}{A r e a o f a t i l e} = \frac{32.5}{0.0625} = 520$
Cost of 100 tiles= 1880
Cost of 1 tile $= \frac{1880}{100} = R s 18.8$
Thus, the cost of 520 tiles $= 18.8 \times 520 = R s 9776$ (This is the cost of flooring the room)

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Find the cost of flooring a room 6.5m by 5m with square tiles of side 25cm at the rate of Rs 1880/- per 100 tiles.

Area of the room =6.5×5=32.5m2 Area of 1 tile =25×25=625cm2=0.0625m2 Number of tiles required =Area of roomArea of a tile=32.50.0625=520 Cost of 100 tiles= 1880 Cost of 1 tile=1880100=Rs 18.8 Thus, the cost of 520 tiles=18.8×520=Rs 9776 (This is the cost of flooring the room)