How many CDs will a salesperson need to sell to make $52.80 in commission if the commission rate is 8% and the CDs sell for $12 apiece?

Question

I needed help I thought it has something to do with equation but guess not.

Answer 1

commission per CD = .08*12 = .96
so
52.8/.96

Answer 2

Let x = the number of CDs he needs to sell.

12x * 0.08 = 52.80

0.96x = 52.80

x = 55