Answer:
Option B. 2.5
Step-by-step explanation:
Step 1:
Data obtained from the question. This includes:
Height of slope = 28 inches
Length of slope (ramp) = 70 inches
Mechanical advantage =?
Step 2:
Determination of the mechanical advantage. This is illustrated below:
Mechanical advantage = length of slope / height of slope
Mechanical advantage = 70/28
Mechanical advantage = 2.5