Answer to Question #279671 in Microeconomics for Shashi

Question #279671

mux=120-10x

muy=160-20y

price of x=rs.10/=

price of y= rs.20/=

income=220/=

calculate the total utility from the consumption of 4 units of good x and 5 units of good "y


1
Expert's answer
2021-12-16T18:09:21-0500

Total utility is found by integrating the marginal utilities for both x and y and summing them.

Therefore the total utility function will be as below:

U(x,y)=(120x5x2)+(160y10y2)U(x,y)=(120x-5x^{2})+(160y-10y^{2})

The consumers budget line from the information can be summerized as

10x+20y=22010x+20y=220

When the consumer consumes 4 units of good x and 5 units of good y, he spends a total of rs.140.

The utility derived from such a combination will be:

U(x,y)=(120×45×42)+(160×510×52)U(x,y)=(120\times 4-5\times 4^{2})+(160\times 5-10\times 5^{2})

U(x,y)=400+550U(x,y)=400+550

U(x,y)=950U(x,y)=950



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