Question

You decide to market your own custom computer software. you must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. if each program sells for $13.75. how many copies must you sell to break even?

Answer 1

its 300 copies

Explanation:

just took the test ;)

Answer 2

Let the number of copies that must be sold to break even be x, then
3255 + 2.90x = 13.75x
13.75x - 2.90x = 3255
10.85x = 3255
x = 3255/10.85 = 300.

Therefore, 300 copies must be sold to break even