What is the additional volume of air that a person can expire by a forcible expiration?

If expiratory reserve volume is $1100 \ ml$,residual volume is $1200 \ ml$,and tidal volume is $500 \ ml$,what shall be the functional residual capacity (in $ml$)?

The volume of air present in the lungs after a forceful expiration is called:

Differentiate between: Inspiratory reserve volume and Expiratory reserve volume.

Volume of air breathed in and out,while at rest is called

If Expiratory Reserve Volume $(ERV)$ is $1100 \text{ ml}$, Residual Volume $(RV)$ is $1200 \text{ ml}$ and Tidal Volume $(TV)$ is $500 \text{ ml}$, then what is the Functional Residual Capacity $(FRC)$ (in $\text{ ml}$)?