Robinson is stranded on an island. He only has 24 labor hours in a day, but must sleep for 8 of these hours. The remaining time can be divided between two tasks: fishing (F) and harvesting coconuts (C) . Let Lf and Lc represent time spent allocated to fishing and coconuts respectively. The production of fish and coconuts correspond to the functions C = sqrt(Lc) and F = sqrt(Lf)
Which of the following allocations of (C, F) are Pareto efficient? (check all that apply)
(3, 3)
(4, 0)
(0, 4)
(2, 2)
The correct options are B and C
Reason
Since he has 24 hours in a day and he sleeps for 8 hours, thus he has (24-8) = 16 hours for fishing and collecting coconuts.
So, for option A, number of hours required for (3,3) is 3^2+3^2=18 hours which can not be allocated.
For option B, number of hours required for (4,0) is 4^2=16 hours which is exactly the time he can use at max.
For option C, number of hours required for (0,4) is 4^2=16 hours which is exactly the time he can use at max.
For option D, number of hours required for (2,2) is 2^2+2^2=8 hours which is lower than the 16 hours he can allocate.
Thus, the pareto efficient ourcomes are B and C only.
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