FAR 12 is the accusation of commercial items, while FAR 15 is contracting by negotiation. FAR stands for Federal Acquisition Regulation.
-12
15
The difference is 15 minus 12 = 3
3/4 = 15/20, 3/5 = 12/20 so difference is 3/20 or 15%
-15
15
Product(12, 3) = 12*3 Sum(12, 3) = 12 + 3
12 and 15
27/3 = 9
To find the difference between 26 and 15, you would subtract 15 from 26 to get 11.
3 and 15
A 3 inch wide carpet.