For 40 horses, 320 kg of hay is released per day, equally for all. How much hay should be given to one cow per day if three

For 40 horses, 320 kg of hay is released per day, equally for all. How much hay should be given to one cow per day if three horses are given the same kilogram of hay as for two cows?

Let’s find the mass of hay that is released to one horse per day.
Divide the indicated weight of hay by the number of horses.
We get:
320/40 = 8 kg of hay per day.
Therefore, 3 horses per day require:
8 * 3 = 24 kg of hay per day.
Since the mass of hay for 2 cows is equal to the mass of hay for 3 horses, then for one cow you need:
24/2 = 12 kg of hay per day.
Answer: One cow needs 12 kg of hay for one day.