Sensitivity Analysis

Q$2.$ Currently, you sell $40,000$ units of a product for $$60$ each. The unit variable cost of production is $$15.$ The fixed cost is $$400,000.$ You are thinking of cutting the product price by $25\%.$ You are sure this will increase the sale by an amount from $10$ percent to $50$ percent $($use $10,15,20,25,30,35,40,45,$ and $50\%).$ Perform a senstivity analysis to show how profit will change as a function of the percentage increase in sales? $(20$ points$)$