The table shows the flats occupied by public sector employees in four different buildings, ratio of flats occupied public sector and private sector em...

The table shows the flats occupied by public sector employees in four different buildings, ratio of flats occupied public sector and private sector employees and percentage of vacant flats. Read the table and answer the following questions.

In

building F, the ratio of occupied flats to vacant flats is the same as in building B. The number of flats occupied by public sector employees in building F is the average of the flats occupied by private sector employees in buildings A and B. If the vacant flats in building F are $\frac{2}{5}$ of the flats occupied by public sector employees, find the total number of flats occupied by private sector employees in building F.