In a certain apartment building, there are one-bedroom and two-bedroom apartments. The rental prices of the apartment depend on a number of factors, but on average, two-bedroom apartments have higher rental prices than do one-bedroom apartments. Let M be the average rental price for all apartments in the building. If M is $1,500 higher than the average rental price for all one-bedroom apartments, and if the average rental price for all two-bedroom apartments is $6,000 higher that M, then what percentage of apartments in the building are two-bedroom apartments?	Pick one:	A) 40%	B) 35%	C) 30%	D) 20%	E) 28%
Ratio of 2 Bedroom Apartment: 1 Bedroom Apartment = 1500 : 6000 -----&gt; 1 : 4   Let total number of Apartments be X   No. of 2 Bedroom Apartment = (1 / 5) * X   percentage of apartments in the building are two-bedroom apartments ----&gt;   (1/5) * 100 ---&gt; 20%   Answer : 20%
<result>D</result>
In a certain apartment building, there are one-bedroom and two-bedroom apartments. The rental prices of the apartment depend on a number of factors, but on average, two-bedroom apartments have higher rental prices than do one-bedroom apartments. Let M be the average rental price for all apartments in the building. If M is $1,500 higher than the average rental price for all one-bedroom apartments, and if the average rental price for all two-bedroom apartments is $6,000 higher that M, then what percentage of apartments in the building are two-bedroom apartments?