(a)
Total m = 880
where m = m1 + m2
Budget Constraint of Nancy: 880 = 5x1 + 6x2
6x2 = 880 - 5x1
x2 = 146.67 - 0.83x1
Slope of BC = 0.83
and since, the max score on each exam is 100. So, x1 <= 100 and x2 < = 100
Since, the overall score is the minimum of score obtained in two exams
So, Utility Function, U = Min (x1, x2)
(b)
at equilibrium, x1 = x2
Put x1 = x2 into the budget constraint,
880 = 5x1 + 6x1
x1* = 80 = x2*
So, Overall score is acheived by scoring 80 in each exams.
(c)
Overall Score is the minimum of two score = Min(80, 80) = 80
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