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What Is the Consumers' Surplus for the Demand Curve P $\frac { x } { 20 }$

Question 97

Multiple Choice

What is the consumers' surplus for the demand curve p = 5 - $\frac { x } { 20 }$ at the sales level $x = 60$ ?

A) 291
B) 320 - $\frac { 1 } { 20 }$ ln 60
C) 200 - 20 ln 60
D) 90
E) none of these

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