To make a glass decanter, it requires 7 hours of labor and two pounds of glass. making a decanter needs a special tool at a cost of $65 which can be reused for many decanters. to make a glass tray, it requires only 2 hours of labor and two pounds of glass. making a glass try requires a special tool at a cost of $149 which can be reused for many trays. supposed there are 100 labor hours and 75 pounds of glass available. the profit of a decanter is $50 and the profit from a tray is $40. how many decanters and trays should be produced to maximize the total profit?