A trader realizes 10x - x2 naira profit from the sal...
A trader realizes 10x - x2 naira profit from the sale of x bags on corn. How many bags will give him the desired profit?
4
5
6
7
Correct answer is B
y = 10x - x2
dy/dx = 10 - 2x
As dy/dx = 0,
10 - 2x = 0
2x = 10
x = 5
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