In this case for the maximum number of one-bedroom apartment, we have:
![96000-(15\cdot800)=84000](https://img.qammunity.org/2023/formulas/mathematics/college/zpl82stvj3ktxevdajwjziqocz0adsnnts.png)
84000 square feet for two-bedrooms apartments, so:
![(84000)/(1200)=70](https://img.qammunity.org/2023/formulas/mathematics/college/8yuh3d8yfrw2ozo7sge309jqsengrvq2p4.png)
70 two-bedrooms apartment, and in this case the revenue is:
![15\cdot650+70\cdot900=72750](https://img.qammunity.org/2023/formulas/mathematics/college/d0fv99y8u7uexepjw5at1o7pccw2w9auxp.png)
And the revenue becomes smaller for fewer one-bedrooms apartments, so in this case tto maximize the revenue 70 two-bedrooms apartments should be built.