Prepared by Dr. Richard Ng

1. BBMP 1103
Mathematic Management
Exam Preparation Workshop Sept 2011
Part 9 – Consumer’s Surplus and
Critical Point
Presented By: Dr Richard Ng
26 Nov 2011
2ptg – 4ptg

2. 9. Focus on Consumers’ Surplus
There are consumers who are willing to pay more than the
equilibrium price, so they benefit from the lower equilibrium
price. The area of A represents the consumers’ surplus.
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3. Question: 20 (January 2011)
Suggested Answers:
p = 200 – q2 (q + 10)(q – 4) = 0
p = 6q + 160 q = -10 and q = 4
6q + 160 = 200 – q2 p = 200 – (4)2 = 200 – 16 = 184
q2 + 6q – 40 = 0
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6. 10. Focus on Critical Point
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11. Question: 21 (May 2010)
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12. Question: 22 (September 2009)
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13. End of
Exam
Workshop
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