human
Mattison is 60 inches tall. His two-story house is 7 times as high as he is. The floor to the ceiling on the first floor is thrice as high as he is. How high is the roof from the second floor's floor in inches?
assistant
How high is the house? ** Mattison's two-story house is 60 x 7 = <<60*7=420>>420 inches high.
How high is the first floor? ** The floor to the ceiling on the first floor is 60 x 3 = <<60*3=180>>180 inches high.
How high is the roof from the second floor's floor in inches? ** Hence, the roof is 420 - 180 = <<420-180=240>>240 inches high from the second floor's floor.
#### 240