A wheelchair ramp must have a slope ratio of 1:12 (rise:run). If the entrance is 2.5 feet above the ground, how long must the ramp be along the ground?
A24 feet
B28 feet
C30 feet
D36 feet
Explanation
📌 Step 1: Understand the slope ratio 1:12 means for every 1 foot of rise, you need 12 feet of run.
📌 Step 2: Set up the proportion rise/run = 1/12 2.5/run = 1/12
📌 Step 3: Solve run = 2.5 × 12 = 30 feet
💡 Real-world context: The 1:12 slope ratio is required by the ADA (Americans with Disabilities Act) for wheelchair accessibility. This is a common real-world application tested on the Regents.
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