Answer:
62 steps per minute
Explanation:
Let the number of steps he climbed per minute be x.
If Robert climbed 775 steps in 12 and 1/2 minutes, let's go ahead and determine many steps he took per minute by setting up the question as a proportion;
[tex]\begin{gathered} \frac{775\text{ steps}}{12.5\text{ minutes}}=\frac{x\text{ steps}}{1\text{ minute}} \\ 12.5x=775 \\ x=\frac{775}{12.5} \\ x=62\text{steps} \end{gathered}[/tex]