Bob makes three different silverware - spoons, forks and knives. Each unit (dozen) of spoon gives him a profit of $12, forks of $17 and knives of $13. He has 175 hours of machine time, 280 hours of labor and 190 pounds of steel. It takes him 4 hours of machine time, 3 hours of labor time and 2 pounds of steels to make one unit of spoons. Each unit of forks take 5 hours of machine time, 7 hours of labor time and 1.5 pounds of steel, while knives take 3 hours of machine time, 8 hours of labor and 3 pounds of steel. It is also found that he should make at least 10 units of forks in the production process.

The solution is x1 = __________ , x2 =_____________, x3 = _____________, with an objective value of __________________.

The resources that are used up are:_________________

If it was decided that as many as 15 units of forks could be made instead of 10, how much would profit increase? _________________