Answer to Question #142643 in Microeconomics for Jyotiramay Rout

Question #142643
An individual consumer consumes two commodities X1 & X2. The utility function is U = X1^0.4 X2^0.6. The price of commodity one is P1 = Rs. 3.00, the price of commodity two is P2 = Rs. 4.00, the individual's income per period is Rs. 108. Determine the utility maximizing level of X1 & X2 and derive the fans curve for the two commodities.
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Expert's answer
2020-11-11T08:27:35-0500

At the utility maximizing level of X1 & X2:

MU1/P1=MU2/P2MU1/P1 = MU2/P2 or MU1/MU2 = P1/P2,

MU1=U(X1)=0.4(X2/X1)0.6,MU1 = U'(X1) = 0.4(X2/X1)^{0.6} ,

MU1=U(X1)=0.6(X1/X2)0.4,MU1 = U'(X1) = 0.6(X1/X2)^{0.4},

So, we get:

2X23X1=34,\frac{2X2} {3X1} = \frac{ 3} {4} ,

X1 = 8/9 X2,

According to the budget equation:

3X1 + 4X2 = 108, we get:

3×8/9×X2+4X2=108,3×8/9×X2 + 4X2 = 108,

20/3×X2=108,20/3×X2 = 108,

X2 = 16.2 units,

X1=8/9×16.2=14.4X1 = 8/9×16.2 = 14.4 units.


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