A bookstore offered mystery bags each containing 12 books. The quantity of each type of book was the same in each mystery bag. A shopper bought 3 mystery bags and found that 6 books were spy novels.

Question

A bookstore offered mystery bags each containing 12 books. The quantity of each type of book was the same in each mystery bag. A shopper bought 3 mystery bags and found that 6 books were spy novels.

Based on this information, which prediction can the shopper make about buying mystery bags in the future?

There will be 4 more spy novels in 8 bags than in 6 bags.

There will be 2 more spy novels in 6 bags than in 4 bags.

There will be 1 more spy novel in 9 bags than in 8 bags.

There will be 6 more spy novels in 10 bags than in 8 bags.

Answer 1

There will be 1 more spy novel in 9 bags than in 8 bags. This prediction is based on the fact that each mystery bag contains the same quantity of each type of book, so increasing the number of bags by one will result in one additional spy novel.