Question

2. Suppose that a student intends to spend 4 days studying economics or astronomy. following table gives the maximum number of pages the student can review given astronomy, 3 days on astronomy and 1 on economics, 2 days on astronomy and economics, 1 day on astronomy and 3 on econo Days on Astronomy 4 Astronomy (pages) Days on Economics Economics (pages) 0 The 4 days on 2 on mics, and 4 days on economics. 140 80 120 210 270 300 What is the opportunity cost per page of increasing astronomy study from 3 days to 4 days? A) 20 Astronomy pages B 120 Economics pages C) 1/6 Astronomy Pages D) 6 Economics pages 2o E) None of the above Refer again to the table in question #2. Suppose that the extra marks gained per page of study is the same for economics and astronomy. What is the maximum number of days that the student should study economics? A) 4 Days B)3 Days C)2 Days D)1 Day E) 0 Days

Answer 1

Ans.2- (B)
When he is increasing astronomy study from 3 to 4 days ,his study of economics pages decreases from 120 to 0. So, his opportunity cost is 120 economics pages.
Ans.3- (B)
Suppose he gets 1 mark for each extra page studied.
If he studies economics and astrology for 2 days,he will study 350 pages and hence will obtain 350 marks.
If he studies economics for 3 days and astrology for 1 days,he will still study 350 pages and hence will obtain 350 marks.
In all the other cases , he will study less than 350 pages and hence will obtain less than 350 marks.
So, maximum no. of days he should study economics is 3 days.

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