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Questions › JNU › JNU SIS 2012 › Q3
4 marks, −1Microeconomics › Perfect competition › Price ceilings, floors and subsidiesEasyabout 2 min

JNU SIS 2012 Question 3: Perfect competition

Suppose the demand function for wheat is Qd=10−2pQ_d = 10 - 2pQd​=10−2p and supply function is Qs=3p−5Q_s = 3p - 5Qs​=3p−5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price ps=4p_s = 4ps​=4 and purchases the extra supply at the support price.

For the problem in Q1, the cost to the government of this policy is

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Suppose the demand function for wheat is Q_d = 10 - 2p and supply function is Qₛ = 3p - 5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price pₛ = 4 and purchases the extra supply at the support price. For the problem in Q1, the cost to the government of this policy is (A) 21 (B) 20 (C) 14 (D) 10

Also written as: Suppose the demand function for wheat is Q_d = 10 - 2p and supply function is Q_s = 3p - 5. The government is concerned that the market equilibrium price of wheat is too low and would like to implement a price support policy to protect the farmers. By implementing the price support policy, the government sets a support price p_s = 4 and purchases the extra supply at the support price. For the problem in Q1, the cost to the government of this policy is

Perfect competition has come up 115 times in 7 exams since 2006.

What this question tests

This question is on Price ceilings, floors and subsidies, part of Perfect competition in Microeconomics.

What binding and non-binding price controls and per-unit subsidies do to quantity, shortage and cost.

TestStop has 13 past-paper questions on this subtopic; the nearest in year are below.

  • IIT JAM 2021 · Q52A vaccine has supply q = 14 + 5p and demand q = 329 - 5p. The government sets a maximum price of Rs. 25 and…
  • GATE 2023 · Q57The demand and supply functions for a commodity are given by: D(p) = 10-2p and S(p) = -2+p where D(p) and…
Practise Perfect competitionMore on Price ceilings, floors and subsidies

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Question from the JNU SIS 2012 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.