After a hard day of classes, Joe frequently enjoys going out to dinner at the Slick Pig or bowling at Strike and Spare. Both activities cost $5. Assume he has $50 per month entertainment budget. Find Joe's optimal consumption bundle of barbecue and bowling and GRAPHICALLY show this optimum on a diagram that shows (and labels) the indifference curves and budget constraint. In the utility functions, S indicates trips to the Slick Pig and B indicates trips to Strike and Spare bowling.
a. U = 2S+B
b. U= min{S,B}
PS= $5
PB = $5
Income , I = $50.
(a) U= 2S + B
MRS = MUS/ MUB
MUS = 2
MUB =1
MRS = 2/1 = 2.
It implies that the slope of the indifference curve is constant = 2.
And budget equation is PS S + PB B = I
5 S + 5 B = 50
When S= 0, B =10
When B=0 , S=10
Optimal bundle is where budget line is tangent to the indifference curve , here the indifference curve slope is constant. It implies that there would be corner solution.Optimal bundle is when Joe consumes 10 units of B i.e 10 trips to strike and spare and consumes no S i.e no trips to the slick pig . This is shown in the figure below:
(b) U = min(S,B)
At optimal S=B
Now, by putting this into budget equation , we get:
5 S + 5 S = 50
10 S = 50
S= 5 . And hence, B=5 .
Hence, optimal bundle is when Joe consumes 5 units of S i.e 5 trips to slick pig and 5 units B i.e 5 trips to strike and spare. This is shown in the figure below:
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