If x is the price of each object, than the price, P, times x is the revenue. So . For the first part, P=$14 and x=12,000 so . Now if the amount sold has to been increased by 1,200 units per year this means that the new total objects sold is 12,000+1,200=13,200. Follow?

So now we know the units sold and the desired revenue, but not the price. Let's set up the equation again: so . Now solve for P and solve for how much this new price has increased from the old.

edit: Your problem might be a little different than this. I don't know if the first line means those products were sold once or that's the yearly amount.