Answer
The statement makes sense.
Work Step by Step
If a house has \[1500\text{ft}{{\text{.}}^{\text{2}}}\]area and if six bedrooms are to be made, if we take only bedrooms into consideration, each bedroom will have \[250\text{ft}{{\text{.}}^{\text{2}}}\]area, which is enough. But, there will not be only rooms in a mansion.
A mansion will also have a living area, kitchen and other utility areas.
In which case, the area of rooms will decrease. If it is taken around \[150\text{ft}{{\text{.}}^{\text{2}}}\]per room, the area of 6 rooms will come out to be\[900\text{ft}{{\text{.}}^{\text{2}}}\]. The remaining area will be\[600\text{ft}{{\text{.}}^{\text{2}}}\]. This area can be used for the other utility areas of the mansion.
So, this statement makes sense.
