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Tamil Nadu Board of Secondary EducationHSC Commerce Class 11

Given the demand function q = 150 − 3p, derive a function for MR. - Economics

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Question

Given the demand function q = 150 − 3p, derive a function for MR.

Sum

Solution

Given:
q = 150 – 3p
\[\frac { dq }{ dq } = 0 – 3 (1)\]

\[\frac { dq }{ dq } = – 3\]

Revenue = price × quantity = p (150 – 3p)
= p (150 – 3p)
= 150p – 3p2

MR = \[\frac { dq }{ dq } = 150\]

\[\frac { dq }{ dq } -6p \frac { dq }{ dq }\]

= 150 \[(\frac { – 1 }{ 3 }) – 6p (\frac { – 1 }{ 3 })\]

= – 50 + 2p

= – 50 = 2 \[(\frac { 150 – q }{ 3 })\]

= 50 + 100 + \[\frac { – 2 q }{ 3 }\]

= 50 – \[\frac { 2 q }{ 3 }\]

= 50 – \[\frac { 2 }{ 3 }\] (150 – 3p)

MR = 2p – 50

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Chapter 12: Mathematical Methods for Economics - Model Questions - Part B [Page 272]

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Samacheer Kalvi Economics [English] Class 11 TN Board
Chapter 12 Mathematical Methods for Economics
Model Questions - Part B | Q 2 | Page 272
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