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Answer»

Solution

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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