Final answer:
To estimate the total cost for three full bathrooms, we sum the costs of bathtubs, toilets, and sinks for one bathroom, multiply by three, and then add an additional 30% for pipes and fittings. The final total cost is $19,402.50.
Step-by-step explanation:
The total cost for the fixtures in one bathroom can be calculated by adding the cost of one bathtub/shower, one water closet (toilet), and one lavatory (sink). This sum is then multiplied by 3 for all three bathrooms, and finally, we add 30% to the subtotal for the cost of pipe and fittings.
The cost of fixtures for one bathroom is:
- Bathtub/shower: $2,500
- Water closet: $1,525
- Lavatory: $950
The subtotal for one bathroom is $2,500 + $1,525 + $950 = $4,975.
The total cost for fixtures for three bathrooms is $4,975 × 3 = $14,925.
To add the additional costs for pipes and fittings, we calculate 30% of the subtotal: 0.30 × $14,925 = $4,477.50.
The total cost for all three bathrooms including pipes and fittings is $14,925 + $4,477.50 = $19,402.50.