The farm bred turkeys, geese, hens, and chickens. Everything is 400. Turkeys and geese a hen are 150. No hen has more than one chicken, but some hens have no chick. Half of them are also a quarter of the chickens. When the turkey was subtracted by 15, we got 75. How many are turkeys, geese, hens? How many hens have no chick?

Correct answer:

k =  90
h =  60
s =  250

Step-by-step explanation:

k+h+s = 400
k+h = 150

h+k+s = 400
h+k = 150
k = 90

h = 60
s = 250

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