Question

A man walking upward on a staircase at the speed of x steps per second takes a total time of y seconds to reach the top. At what speed (in steps per second) he should walk to reach at the top in $\frac{y}{3}$ seconds?

• A. $\frac{3}{x}$
• B. $\frac{3x}{2}$
• C. $2x$
• D. $3x$

Answer 1

Answer: (D)

$3x$

Answer 2

The correct answer is (D): $3x$