word problem help

Question

You decide to market your own custom computer software.You must invest $2125 on computer hardware,and spend $4.25 to buy and package each disk.If each program sells for $10.50,how many copies must you sell to break even?

Answer 1

Alllllllright, Kelani. Let's see what we can do.

 

Let's let the number of disks = d.

 

We have that you need to spend 2125 plus 4.25d, right?

 

If you sell each disk for $10.50, then your sales would equal 10.50d, right?

 

We need to find when your cost equals your sales, so 2125 + 4.25d = 10.5d.

 

Can you solve it from here?