how do you find someones walking rate?

Question

the problem is: if Perez did the 20km walk in 1 hour, 20 minutes, and 7 seconds, what is his walking rate.

Thanks!
~leti

Answer 1

You would use the formula
Distance = Rate x Time
Here, distance is 20 km, and time is about 80.9 minutes, now solve for rate (which will be in km/minute. You can then convert this into km/hour by multiplying by 60 minutes/hour).

Answer 2

Convert hours and minutes to seconds. Add all the seconds. Divide 20 km by the number of seconds. That will give rate in km/sec.