Assume that wheat is produced in a purely competitive market. In the SHORT RUN the demand for wheat increases and wheat producers earn economic profits. In the LONG RUN how will this change in economic situation affect: (This is a horrible question so think of this as: what happens in the LR when firms are making SR positive economic profits in purely competitive industries)
a. price of wheat (increase or decrease)
b. economic profits (increase or decrease)
In short run, firm can make positive economic profits or firm can earn super normal profit. Presence of super normal profit in short run incentivize entry of new firms in market. Hence, supply of commodity increases significantly after entry of new firms in market. It will reduce price of good and now firm would be reduced to zero economic profits or super normal profit would no longer be there. In long run, firms will get only zero economic profit.
Hence, price of wheat decreases
and economic profit also decreases due to entry of new firms in market.
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