What is the revenue if there are 20 units sold?

Question

x = -20p + 500. What is the revenue if there are 20 units sold?

Answer 1

Let x = 29, then we get 29 = - 20p + 500; from here 20p = 500 - 29 = 471; price p = $23.55 per unit

Now revenu R = p·x = 23.55·29 = $682.95

Answer 2

plug 20 into the equation

x=-20p +500 to get

20=-20p +500

divide by 20

1 = -p + 25

p = 25-1 = 24

Revenue = xp where x=20 and p =24

R = 20(24) = 480

IF price = $24, then revenue = $480