Mr. Curtis has 325 chickens on his farm where 28 are roosters and the rest are hens. Twenty hens do not lay eggs while the rest of the hens do. How many egg-laying hens does Mr. Curtis have on his farm?
Mr. Curtis has 325 - 28 = <<325-28=297>>297 hens.
Out of the 297 hens, only 297 - 20 = <<297-20=277>>277 hens lay eggs.
#### 277