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Suppose the demand and supply curve of commodity X in a perfectly competitive market are given by:

qd=700−pq_d = 700 - p

qs=500+3pq_s = 500 + 3p

Assume that the market consists of identical firms. What will be the equilibrium price for this commodity?

Solution

✅ Correct Option: 3

At equilibrium, qd=qsq_d = q_s. So 700−p=500+3p700 - p = 500 + 3p, giving 200=4p200 = 4p, hence p=50p = 50.

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