Question

The original rooster in a feedlot was 200 fewer than the hens, and then 50 hens came in a day. At this time, the hens' teaching capacity was twice that of the roosters. How many roosters and hens were in the farm?

Answer 1

Let $x=$ the amount of the roosters. There were $x+200$ hens. Then

$$2x=x+200+50$$

$$x=250$$

$$250+200=450$$

There were $250$ roosters and $450$ hens in a feedlot.