The average product of labor changes when the firm uses 16 units of labor is 3.375
The average product of labor will be calculated as = Q/L
APL = (K¾ L¼)/L
APL= (K¾)/ (L¾)
Therefore, when K=81 and L=16
APL= (81)¾ / (16)¾
APL= 3³/2³ = 27/8 = 3.375
When L= 256 and K= 81
APL = (81)¾ / (256)¾
APL= 3³/4³ = 27/64 = 0.421
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