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In perfectly competitive markets long term economic profit is zero. If so, why firms bother to...

In perfectly competitive markets long term economic profit is zero. If so, why firms bother to enter such market? Explain this in detail
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Answer #1

In perfect competition all firms in the long run earn only normal profit or zero economic profit. Zero economic profit means firm revenue is covering economic cost. Economic cost is the sum of implicit+explicit cost whereas implicit cost covers the opportunity cost which include the normal profit. Normal profit is the profit which can be earned by doing some other business. Thus when firms earns zero economic profit then firm earns normal profit due to which firms bother to enter.

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