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 r be the average rental price for all apartments in the building . if r is $ 5,600 higher than the average rental price for all one - bedroom apartments , and if the average rental price for all two - bedroom apartments is $ 10,400 higher that r , then what percentage of apartments in the building are two - bedroom apartments ?
"ratio of 2 bedroom apartment : 1 bedroom apartment = 5400 : 104000 - - - - - > 7 : 13 let total number of apartments be x no . of 2 bedroom apartment = ( 7 / 20 ) * x percentage of apartments in the building are two - bedroom apartments - - - - > ( 7 / 20 ) * 100 - - - > 35 % option b is correct"
divide(multiply(5,600, const_100), add(add(multiply(const_2, const_1000), const_100), 5,600))