Using x hours of skilled labor and y hours of unskilled labo
Using x hours of skilled labor and y hours of unskilled labor, a manufacturer can produce Q(x,y) = 100 x y^(1/2) units each week. Currently 40 hours of skilled labor and 25 hours of unskilled labor are being used. Suppose the manufacturer reduces the skilled labor level by 2 hours and increases the unskilled labor by 4. Use calculus to determine the approximate effect of these changes on production.
 
Production changes by approximately units
Production changes by approximately units
Solution
Change in Q = Q/x * (-2) + Q/y * (+4) = -200 y^(1/2) + 50 x y^(-1/2) * 4 = -600
Hence, the producttoin reduces b 600 units a week approximately

