Study the following information carefully and answer the questions.
For a room, the rate of painting is Rs. 3200 per square metre. The rate of carpeting per square metre is 120% of that of tiling. The cost of decorating the room Is 14 times to that of carpeting on the floor. The cost of electrification is 75% of that of carpeting the floor. The rate of tiling on the floor is 125% of that of painting. The dimensions of the room are 6 m x 6m x 5m.
What will be the total cost of painting, carpeting, decoration and electrification of the room if the dimensions of the room be 21 mx 42 mx 27 m?
Cost per square metre :
Rate of painting = 3200
Rate of tiling = $$\frac{125}{100} * 3200$$ = 4000
Rate of carpeting = $$\frac{120}{100} * 4000$$ = 4800
Area of 4 walls of the room = 2 * 27 * (21 + 42) = 3402 sq. metre
Area of the floor = 21 * 42 = 882 sq. metre
=> Cost of painting = (3402 + 882) * 3200 = Rs. 13708800
Carpeting = 4800 * 882 = Rs. 4233600
Decoration = 4233600 * 14 = Rs. 59270400
Electrification = $$\frac{75}{100}$$ * 4233600 = Rs. 3175200
$$\therefore$$ Total expenditure = 13708800 + 4233600 + 59270400 + 3175200 = Rs. 80388000
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