a firms average total cost is 300 at 5 units of output & 320 at 6 units of output the marginal cost of producing the 6th unit is :
a).20 b).120
c).320 d)420.
a firms average total cost is 300 at 5 units of output & 320 at 6 units of output the marginal cost of producing the 6th unit is :
a).20 b).120
c).320 d)420.