GRE Question of the Day (November 17th)

Math

Of the 150 houses in a certain development, 60 percent have air-conditioning, 50 percent have a sunporch, and 30 percent have a swimming pool. If 5 of the houses have all three of these amenities and 5 have none of them, how many of the houses have exactly two of these amenities?

(A) 10
(B) 45
(C) 50
(D) 55
(E) 65

Correct Answer - D - (click and drag your mouse to see the answer)

Question Discussion & Explanation