A carpenter is trying to calculate the number of individual risers that a staircase will contain. The total rise of the staircase will be 11′. Assuming an individual riser height of 8″, what is the minimum number of risers that will be needed for this staircase?

A. 16
B. 18
C. 15
[D. 17]

Is it D?

1 answer

yes. 11 * 12/8 = 16.5