The associative property of addition says that when we add more than two numbers the grouping of the addends does not change the sum. In the example above, we can easily observe that: (3 + 6) + 8 = 3 + (6 + 8). 9 + 8 = 3 + 14. 1 7 = 17. Notice that the SUM is the same no matter what way you group the addends.
Cooking a pork roast on a rotisserie grill set for direct or indirect low heat will take up to four hours for an average 5-to 6-pound roast. The finished internal temperature of the roast should be 145 F, when measured from the thickest portion of the roast.
6. Cook the pork roasts: Put the spit on the grill, and turn on the rotisserie motor. Cook with the lid closed. It should take 30 minutes to 1 hour, depending on the thickness of the pork roasts. 2 1.75lb roasts should be done in about 45 minutes.