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The American with Disabilities Act (ADA) requires that the slope of a wheelchair ramp be no greater than 1:12. Which of the following is the minimum length of a ramp needed to provide access to a door that is 1.5 feet above the sidewalk?

A. 12 feet

B. 4.5 feet

C. 3 feet

D. 18 feet

Answer Explanation:

We use the given slope to find the minimum length of the ramp. In this case, slope is the ratio of height to length of the lamp. Thus,

If we let x be the minimum length of the ramp. Then,

Substituting the value of slope into the above equation results in,

Solve for value of x by cross-products

X = 18 Feet

Thus, the minimum length of the ramp needed to provide access to a door that is 1.5 high is 18 feet.

Therefore, the Correct Answer is D.

Q #1: Which of the following is the decimal equivalent of 15/27? (Round your answer to 2 decimal places).

A. 0.56

B. 5.56

C. 3.86

D. 0.36

Answer Explanation

Using a calculator to evaluate 15÷27 results in 0.5555555556. To two decimal places, the answer becomes 0.56.

Thus, 0.56 is the decimal equivalent of 15/27.
Q #2: Solve for A in the equation below. Diagram:

A. A = t(kr+P)

B. A = (kr+P)/t

C. A = P-kr/t

D. A = kr-t/P

Answer Explanation

P-At=-kr

Subtract P on both sides

P-P-At=-kr-P

-At=-kr-P

Divide both sides by -t

-At/-t=(-kr-P)/-t

A=(kr+P)/t
Q #3: A child has collected 100 pennies, 90 nickels, 50 dimes, and 5 quarters. Which of the following charts accurately organizes the number of coins? Chart 1 Chart 2 Chart 3 Chart 4

A. Chart 1

B. Chart 2

C. Chart 3

D. Chart 4

Answer Explanation

C organizes the collection correctly.

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