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Four black cows and three brown cows give as much milk in five days as three black cows and five brown cows give in four days Which color cow is a better milker and why?
Wiki User
∙ 12y ago
The black cows are the better milkers because the amount of milk they produced per cow is greater than that from the brown cows.
This is a simple algebra problem. Let x = black cow and y = brown cow, solving as such:
4x = 5
3x = 4
3y = 5
5y = 4
4x + 3x = 9
7x = 9
x = 9/7 = 1.29 units per black cow
3y + 5y = 9
8y = 9
y = 9/8 = 1.13 units per brown cow
Wiki User
∙ 12y ago
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