7. Calculate the food eaten by a hen, a cow and a goat

On a farm, there are 15 hens, 3 cows and 7 goats. Together they can complete the food grains of 31.15\(kg\) in a day. If a goat eats 2 times hens less than a cow, and the cow eats \(2\) times the goats and a hen. Find the number of grains a hen, a cow and a goat has.

 

 

The amount of grains had by a hen is 1.0053.0151.005\(kg\).

 

The amount of grains had by a cow is 1.0051.0053.015\(kg\).

 

The amount of grains had a goat is 1.0053.0151.005\(kg\).