Question

Could you please explain the way how to calculate total cost and marginal revenue? not just simple solution

#Fill in the blanks in the following table. At which level of output do we obtain maximum profit? What is the relationship between marginal revenue and marginal cost at the profit-maximizing level of output?

Level of Output	Total Revenue	Total Cost	Profit	Marginal Revenue	Marginal Cost	Marginal Profit
20	2400	1900		420	100
21	2800				120
22	3180				140
23	3540				160
24	3880				180
25	4200				200
26	4500				220
27	4780				240
28	5040				260
29	5280				280
30	5500				300

Answer 1

Level of Output	Total Revenue	Total Cost	Profit	Marginal Revenue	Marginal Cost	Marginal Profit
20	2400	1900	500	420	100	500
21	2800	2020	780	400	120	280
22	3180	2160	1020	380	140	240
23	3540	2320	1220	360	160	200
24	3880	2500	1380	340	180	160
25	4200	2700	1500	320	200	120
26	4500	2920	1580	300	220	80
27	4780	3160	1620	280	240	40
28	5040	3420	1620	260	260	0
29	5280	3700	1580	240	280	-40
30	5500	4000	1500	220	300	-80