Solve the following word problems for the unknown. Round decimals to hundredths and percents to the nearest tenth when necessary.
Morley Fast, a contractor, built a warehouse complex in Canmore for the following costs: land, $12,000; concrete and steel, $34,500; plumbing and electrical, $48,990; general carpentry and roof, $42,340; and other expenses, $34,220.
a. What percent of the total cost is represented by each category of expenses?
b. When the project was completed, Morley sold the entire complex for 185% of its cost. What was the selling price of the complex?