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 $700 higher than the average rental price for all one-bedroom apartments, and if the average rental price for all two-bedroom apartments is $2,100 higher that M, then what percentage of apartments in the building are two-bedroom apartments?
Choose the correct answer:
A) 25% B) 15% C) 20% D) 40% E) 45%
Ratio of 2 Bedroom Apartment: 1 Bedroom Apartment = 700 : 2100 -----&gt; 1 : 3   Let total number of Apartments be X   No. of 2 Bedroom 25%partment = (1 / 4) * X   percentage of apartments in the building are two-bedroom apartments ----&gt;   (1/4) * 100 ---&gt; 25%   25%nswer : 25%
<result>A</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 $700 higher than the average rental price for all one-bedroom apartments, and if the average rental price for all two-bedroom apartments is $2,100 higher that M, then what percentage of apartments in the building are two-bedroom apartments?