Two people developed first-cut cost estimates to construct a new 130,000 square foot building on a university

Question:

Two people developed first-cut cost estimates to construct a new 130,000 square foot building on a university campus. Person A applied a generalpurpose per unit cost estimate of $180 per square foot for the estimate. Individual B was more specific: she used the area estimates and per unit cost factors shown below.

(a) What are the cost estimates developed by the two people?

(b) What is the percent increase between the lower and higher cost estimates?

Cost per ft?, $ Type of Usage Area, % 30 Classroom 125 Laboratory 40 185 Offices 30 110 Furnishings-labs 25 150 Furnishi