Question

In: Economics

B. Chuck has been hired by the Academic Department of a Community College to t-u-t-o-r students...

B. Chuck has been hired by the Academic Department of a Community College to t-u-t-o-r students who are struggling in the Math classes. Chuck does not have Internet service at home, so he can either go to a local store that provides Internet for ten cents per minute and Skype students or he can drive to Campus to meet them. The Community College is located 20 miles from Chuck’s home and the round-trip costs of $5 in gasoline money. In both cases, he can only t-u-t-o-r one student. He has a total of $20 per week to spend on t-u-t-o-r-ing. To make his preferred choice, Chuck uses a handy utilimometer that measures his total utility from Skype call and from Campus visits. Using the values given in the following table, figure out the points on Chuck’s consumption choice budget constraint (it may be helpful to do a sketch) and identify his utility-maximizing point. Also, take Chuck’s total utility information, and use the marginal utility approach to confirm the choice of Internet minutes and campus visits that maximize Chuck’s utility

Campus visits

Total Utility

Internet Minutes

Total Utility

0

0

0

0

1

80

20

200

2

150

40

380

3

210

60

540

4

260

80

680

5

300

100

800

6

330

120

900

7

200

140

980

8

180

160

1040

9

160

180

1080

10

140

200

1100

Solutions

Expert Solution

Cost of campus visit=Pc=$5

Cost of 20 minutes internet time=Pm=20*0.1=$2

Campus Visits, C Total Utility form campus visits, TUc Marginal Utility MUc MUc/Pc=Muc/5 Internet minutes, M Total Utility form internet minutes, TUm Marginal Utility MUm MUm/Pm=MUm/2
0 0 0 0
1 80 80 16 20 200 200 100
2 150 70 14 40 380 180 90
3 210 60 12 60 540 160 80
4 260 50 10 80 680 140 70
5 300 40 8 100 800 120 60
6 330 30 6 120 900 100 50
7 200 -130 -26 140 980 80 40
8 180 -20 -4 160 1040 60 30
9 160 -20 -4 180 1080 40 20
10 140 -20 -4 200 1100 20 10

Budget amount=B=$20

Maximum possible number of campus visits=B/Pc=20/5=4

Maximum number of internet minutes=B/Pm=20/0.1=200

Budget constraint can be shown by following diagram

Chuck will maximize utility by choosing the campus visits and internet minutes combination such that

MUm/Pm>MUc/Pc or MUm/Pm=MUc/Pc

We can see that MUm/Pm is higher than MUc/Pm till M=180

First we select this level.

Amount spent=180*0.1=$18

Balance left=20-18=$2

This is less than the price of single campus visit. So, Campus visit is not feasible at this budget.

He would spend the remaining amount in internet minutes only.

So,

Utility maximizing campus visits=0

Utility maximizing internet minutes =200

Maximum Utility=1100


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