Answer:
He needs 35 more video games.
Explanation:
Number of video games Booker has = 85
Number shelves = 3
Number video games that can be fit in 1 shelf = 40
Total number of video games in 3 shelves ;
3 × 40 = 120
120 = Number of video games he has + Number of video games required
120 = 85 + Number of video games required
Number of video games required = 120 - 85 = 35
He needs 35 more video games.