In five days, four black cows and three brown cows give as much milk, as five brown cows and three black cows would give in four days.
Which color cows are the best milk producers?
Make a linear equation with two variables.
x = Milk produced by black cow in one day
y= Milk produced by brown cow in one day
so,
5( 4x + 3y) = 4( 3x + 5y) = k (assume it be k)
Solve for x and y in terms of k
x= k/44, y=k/27.5
thus y i.e. brown cow produces more milk and is better.
-Abhi.
Sol
