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 cost of decoration of the room if its cost be increased by 25% ?
Cost per square metre,
Rate of painting = 6400
Rate of tiling = $$\frac{125}{100} * 3200$$ = 8000
Rate of carpeting = $$\frac{120}{100} * 4000$$ = 9600
Rate of decorating = 14 * 9600 = 134400
Area of the floor = 6 * 6 = 36 sq. metre
Expenditure on decoration = 134400 * 36 = Rs. 4838400
$$\therefore$$ Expenditure after 25% increase = $$\frac{125}{100}$$ * 4838400 = Rs. 6048000
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