House: $2900$ Sq$.$ ft$.$

Price per square foot: $$120$

$24\%$ Excavation and framing complete

$8\%$ Roof and fireplace complete

$3\%$ Wiring roughed in

$6\%$ Plumbing roughed in

$5\%$ Siding on

$17\%$ Windows, insulation, walks, plaster, and garage complete

$9\%$ Furnace installed

$4\%$ Plumbing fixtures installed

$10\%$ Exterior paint, light fixtures installed, finish hardware installed

$6\%$ Carpet and trim installed

$4\%$ Interior decorating

$4\%$ Floors laid and finished

Serge is a retired plumber and feels he can save money by

installing the plumbing himself.

Mrs$.$ Tolstoy feels she can take care of the interior decorating.

What is the estimated cost for the Tolstoy's house if they

use contractors to complete all of the house?

What is the estimated cost for the Tolstoy's house if they

use their talents to complete the house?