If  …

2+3=10

7+2=63

6+5=66

8+4=96

Then …

9+7=??

My question is:
If you have 12 sites plus 2 Arabic and you must present only 6 of these sites in 20 minutes pluse 10 minutes for discusion. Not forgetting to make slides for the total number of slides.  What is the total time needed for presentation and is it posible? And what is the real recquierd number of sites?
Math Question: Impossible