Gina brought a magazine subcription. The magazine company charged $15.75 for the subcription and $2.15 for each issue. If Gina paid $45.85, how many issues did she receive?

$45.85 - 15/ 75?????
I'd been having a bit trouble with this question so this is what I think.

2 answers

totalcost=n*2.15+15.75
n*2.15=45.85-15.75=30.10

n=30.10/2.15= you do it.
14