Help me with this $(@#$* MicroEcon HW

[CuriousAndy]

Here's the chart:

Workers Output Marginal Product Total Cost ATC Marginal Cost
0 0 $200 (initial) -
>----------- 20
1 20 $300 $300
>----------- 30
2 50 $400 $200
>----------- 40
3 90 $500 $166.67
>----------- 30
4 120 $600 $150
>----------- 20
5 140 $700 $140
>----------- 10
6 150 $800 $133.33
>----------- 5
7 155 $900 $128.57

ATC = Avg. Total Cost

Just how the hell do I get Marginal Cost? I've been stressing over this for hours.

 

[CuriousAndy]

OMG! the chart doesn't even come out right!!!!!!!!!!!@#KJ!@#JK!@J#!@KJ#

I'm just gonna figure this out myself... *clutching teeth*

mods, lock!

 

[glenn1]

here's a helpful online resource for you to use...
link

Good luck