Answer:
Mario brought 5 magazines
Explanation:
If you just add $12.60 and $2.25 together then keep adding $2.25 until you get to $23.85, you'll get your answer.
So like,
(1) 12.60 + 2.25 = 14.85
(2) 14.85 + 2.25 = 17.1
(3) 17.1 + 2.25 = 19.35
(4) 19.35 + 2.25 = 21.6
(5) 21.6 + 2.25 = 23.85
So the total would be 5. Mario bought 5 magazines.