Answer :
if marginal cost is between the average variable cost and average total cost, then the average variable cost is increasing and the average total cost is decreasing.
When the average variable cost, the marginal cost, and the average total cost curves are plotted, it is seen that the marginal cost converges the average variable cost and the average total cost curves at their least points. Since the average total cost curve is over the average variable cost curve it can be said that when the negligible taken toll is between the two curves, the average variable cost has as of now come to its least and it is expanding. Be that as it may, since the marginal cost is underneath the average total cost curve, the average total cost curve is diminishing and has not come to its least.
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