A trader realizes 10x – x\(^2\) naira profit from the sale of x bags on corn. How many bags will give him the desired profit?
- 4
-
5
- 6
- 7
The correct answer is: B
Explanation
y = 10x - x\(^2\)
dy/dx = 10 - 2x
As dy/dx = 0,
10 - 2x = 0
2x = 10
x = 5
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