Help needed for calculation of hra exemption

Hi there I am an assistant professor(doctor) at a government institute in delhi.My institute in calculating the HRA exemption from my salary iincluding NPA with DA in the formula for HRA exemption that is applicable-

they r using-Rent paid   -10 % of (basic+DA)

I am attaching my salary slip along with this query.

Is it right that DA is added to the basic for calculating the HRA exemption from taxable salary ?

please answer my question i will be very grateful for the same

Regards

Dr.Anshuman

9540946870