Question 14

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Jambmaths question: 

A trader realizes 10 – x2 naira profit from the sales of x bags of corns. How many bags will give him maximum profit.

Option A: 

4

Option B: 

5

Option C: 

6

Option D: 

7

Jamb Maths Solution: 

$\begin{align}  & \text{Let }y=10x-{{x}^{2}} \\ & \frac{dy}{dx}=10-2x \\ & \text{At max profit }\frac{dy}{dx}=0 \\ & 10-2x=0 \\ & x=5 \\ & \text{The trader must sell 5 bags} \\\end{align}$

Jamb Maths Topic: 
Year of Exam: