60 percent of Andrea's living room floor is covered by a carpet that is 4 feet by 9 feet. What is the area of her living room floor?  Choose the most appropriate option.
A) 14.4	B) 180 / 7	C) 50.4	D) 60	E) 90

Rationale: "60 % of area of the floor = 4 * 9 square feet = 36 square feet i . e . 100 % area of floor = ( 36 / 60 ) * 100 = 60 square feet answer : option d"
Answer: D