Answer
20 rises are needed.
Explanation
To answer this, we need to first note that
1 ft = 12 inches
10 ft = 10 (12 inches) = 120 inches
So,
1 rise = 6 inches
Let 10 feet or 120 inches consist of x rises
1 rise = 6 inches
x rises = 120 inches
We can form a mathematical relationship by cross multiplying
(6)(x) = (1) (120)
6x = 120
Divide both sides by 6
(6x/6) = (120/6)
x = 20 rises
Hope this Helps!!!
