the ratios represent how much of the total is occupied by each flat)A,B and C)
firstly, we can take 8y as area of C And 5y as area of A
so flat A has an area of 5y B his 6y and C is 8y
then 8y-5y =270
so, 3y=270
therefore y=90
area of B is found by taking B as 6y and substituting y as 90
6y=6×90=540m^ 2(square meters)