PLEASE ANSWER ALL THE QUESTIONS !! An investor paid $36,000 for a four-unit apartment building. Each apartment rents for $85.00 per month. The investor figures that by good management a profit of 45% of gross rents could be made. If this is true, what rate of return will the investor realize on the investment?

Group of answer choices

a. 11%

b. 5.5%

c. 5.06%

d. 5.1%

A building has a floor space that measured 24 x 30. If the walls are 6 inches thick, how many square feet would the building take up?

Group of answer choices

a. 720

b. 775

c. 735

d. 732

A lot was sold for $14, 500 and the seller paid a commission of 6% of the selling price. If the listing salesperson received 25% of the total commission, how much did the selling salesperson receive?

Group of answer choices

a. $217.50

b. $304.50

c. $652.50

d. none of the above