Find the sum of cost of water supply charges and the cost of electrica...
**Given information:**
- Total plinth area of all buildings: 500 sqm
- Plinth area rate: Rs. 4200 per sqm
- Cost of water supply: 8% of the cost of the building
- Cost of electrical installations: 10% of the cost of the building
To find the sum of the cost of water supply charges and the cost of electrical installation, we need to calculate the cost of the building first.
**Calculating the cost of the building:**
The cost of the building can be calculated by multiplying the total plinth area by the plinth area rate.
Cost of the building = Total plinth area * Plinth area rate
Cost of the building = 500 sqm * Rs. 4200 per sqm
Cost of the building = Rs. 21,00,000
**Calculating the cost of water supply:**
The cost of water supply is given as 8% of the cost of the building.
Cost of water supply = 8% of Cost of the building
Cost of water supply = 8/100 * Rs. 21,00,000
Cost of water supply = Rs. 1,68,000
**Calculating the cost of electrical installations:**
The cost of electrical installations is given as 10% of the cost of the building.
Cost of electrical installations = 10% of Cost of the building
Cost of electrical installations = 10/100 * Rs. 21,00,000
Cost of electrical installations = Rs. 2,10,000
**Calculating the sum of the cost of water supply charges and the cost of electrical installation:**
Sum of the cost of water supply charges and the cost of electrical installation = Cost of water supply + Cost of electrical installations
Sum of the cost of water supply charges and the cost of electrical installation = Rs. 1,68,000 + Rs. 2,10,000
Sum of the cost of water supply charges and the cost of electrical installation = Rs. 3,78,000
Therefore, the sum of the cost of water supply charges and the cost of electrical installation of the building project is Rs. 3.78 lakhs.
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