A company to produces three products of materials electrical. Each unit of the first one requires 4 of raw material and 2 labor hours for processing and 2 boxes whereas each unit of the second requires 2 of raw materials and 5 labor hours and 5 boxes. And the last one needs 2 of raw material, The raw material is more than 60 and more than 90 labor hours and more than 40 boxes. The cost (50, 30, 20) $.The constrains of the