Jackson spends 9 hours playing video games and 1/3 that much time studying. If Jackson's grade starts at 0 points and increases by 15 points for every hour he spends studying, what is his grade?
First find how many hours he spends studying by dividing the number of hours spent gaming by 3: 9 hours / 3 = <<9/3=3>>3 hours.
Then multiply that quantity by the point increase per hour to find Jackson's grade: 3 hours * 15 points/hour = <<3*15=45>>45 points.
#### 45