The Vilas County News earns a profit of $20 per year for each of its 3,000 subscribers. .....................

Question

The Vilas County News earns a profit of $20 per year for each of its 3,000 subscribers. Management projects that the profit per subscriber would increase by 1¢ for each additional subscriber over the current 3,000. How many subscribers are needed to bring a total profit of $138,125?

Answer 1

138125 = 20(x) + .01( x - 3000)

now solve for x

138125 = 20x +.01x - 30, add 30

138155 = 20.01x divide by 20.01

x = 6904.297851

so they need 6905 subscribers