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April 20, 2014

April 20, 2014

Posted by **ct** on Thursday, December 22, 2011 at 10:08am.

- math -
**Steve**, Thursday, December 22, 2011 at 3:58pmprofit = revenue - cost

revenue = price * quantity = 800/x^2 * x = 800/x

cost = 2 * quantity = 2 * 800/x^2

p = 800/x - 1600/x^2

dp/dx = -800/x^2 + 3200/x^3 = 800/x^3(4-x)

So, maximum profit when charging Rm4/unit.

sales: 50

profit: 100

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