Respuesta :
Answer:
$20,672.40
Step-by-step explanation:
To calculate the total cost of replacing the flooring in the three rooms, we need to follow these steps:
1. Calculate the area of each room by multiplying the length and width:
- Room 1: 10' x 12' = 120 sq ft
- Room 2: 20' x 15' = 300 sq ft
- Room 3: 15' x 18' = 270 sq ft
2. Calculate the total area by adding up the areas of all three rooms:
- Total area = 120 sq ft + 300 sq ft + 270 sq ft = 690 sq ft
3. Calculate the cost of the tile by multiplying the tile price per square foot by the total area:
- Tile cost = $8/sq ft x 690 sq ft = $5,520
4. Calculate the installation cost by multiplying the installation price per square foot by the total area:
- Installation cost = $20/sq ft x 690 sq ft = $13,800
5. Add the tile cost and installation cost together:
- Total cost before tax = Tile cost + Installation cost = $5,520 + $13,800 = $19,320
6. Calculate the sales tax by multiplying the total cost before tax by the tax rate:
- Sales tax = $19,320 x 0.07 = $1,352.40
7. Add the sales tax to the total cost before tax to get the final total cost:
- Total cost with tax = Total cost before tax + Sales tax = $19,320 + $1,352.40 = $20,672.40
Therefore, the total cost of replacing the flooring in the three rooms, including sales tax, would be $20,672.40.
