That is too many feeders. One feeder for every ten to fifteen birds. You might have a traffic jam in the morning after coming down off the roost but the rest of the day they kind of graze on the feed. And someone has already mentioned the quarter pound of feed per day so at that point it is how many days of feed do you want on hand in case you go on a trip?
One feeder for a certain number of birds: depends on the feeder. Some feeders let only one bird eat at a time, others let dozens or hundreds eat at once. Some feeders are just little cups hung on the cage (holds 1/4 pound of food, enough for one bird), while other feeders hold 10 pounds, or 100 pounds, or various other amounts.
OP has not stated what kind of "feeder" is being used.
Too many feeders: is that a problem? If OP is willing to fill the feeders, and if the feeders do not take away space that's needed for other things, then it should be fine.
Also, small numbers can change the arithmetic. If 1 feeder is enough for 10 hens, you don't feed a single hen from 0 feeders (1/10, rounded down.)