Question

If a runner maintains a constant speed of 12 miles an hour how long will it take to complete a half marathon race of 13.1 miles???

Answer 1

At 12 mph, how long does it take to go 13.1 miles?

We know that distance = rate * time
So we know that 13.1 = 12 * time
We can now see that time = 13.1/12 = 1.092 (hours)
That's approximately 1 hour and .092*60=5.52 minutes.