Detailed Instructions: The task is to generate the correct answer for a given math problem.
Problem:Problem: total 90 cows 30 cow gives each 2 liter milk 30 cow gives each 3 / 4 liter milk 30 cow gives each 1 / 4 liter milk this is split into 3 son per each 30 cows & 30 liter milk how ?
Solution:
3