Answer:
37 units.
Explanation:
The computation of farmer's profit-maximizing output is shown below:-
Worker TP MP TC of worker TR = TP × 3 Profit
1 24 13 72 59
2 32 8 26 96 70
(32 - 28)
3 37 5 39 111 72
(37 - 32)
4 40 3 52 120 68
(40 - 37)
Marginal Product is the Additional Product Change when an extra worker is working.
Profit is maximized at 3 units of worker and TP is 37 units.