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?
-
A.
4 -
B.
5 -
C.
6 -
D.
7
Correct Answer: Option B
Explanation
y = 10x – x(^2)
dy/dx = 10 – 2x
As dy/dx = 0,
10 – 2x = 0
2x = 10
x = 5