There are 20 hands in Peter’s class, not including his. Assume every student in the class has 2 arms and 2 hands. How many students are in Peter’s class including him?
There are 20 + 2 of Peter’s hands = <<20+2=22>>22 hands in Peter’s class including his
There are 22 hands / 2 hands per student = <<22/2=11>>11 students
#### 11