There have been 15 "Where's Waldo?" books published. Each book has 30 puzzles to find Waldo. The average person takes 3 minutes to find Waldo in a puzzle. How long would it take to find every Waldo?
There have been 450 puzzles because 15 x 30 = <<450=450>>450
It would take 1,350 minutes to find all the Waldo's because 450 x 3 = <<450*3=1350>>1,350
#### 1350