Dennis lives two floors above Charlie. Charlie lives on a floor whose number is 1/4 Frank's floor number. Frank lives on the 16th floor. What floor does Dennis live on?
First find Charlie's floor number by dividing Frank's floor number by 4: 16 / 4 = <<16/4=4>>4
Then add 2 to find Dennis' floor number: 4 + 2 = <<4+2=6>>6
#### 6