Mmm I would say answer is 96
Cuz you have to get 180° total
So 180-35-49=96°
So you have 12 cases delivered in 1 hour and 30 minutes. 30 minutes is half of an hour or .5
so 12/1.5 is 8, that is 8 cases per hour for a total of 32 cases in 4 hours.
1/10, 3/10, 0.9
Hope this Helps