Question

How long in hours would it take a runner to finish an 11 km race if she is running at a pace of 5.7 mi/hr?

Answer 1

It would take 1.16 h for the runner to finish the race .

Step 1. Convert kilometres to miles.

11 km × (0.621 mi/1 km) = 6.83 mi

Step 2. Calculate the time.

Time = 6.83 mi × (1 h/5.7 mi) = 1.16 h

Answer 2

Answer:  1.199 hour runner will require to cover the 11 km .

Explanation:

Distance covered by  runner = 11 km = 11 × 0.6213 miles = 6.8343 miles

1 km = 0.6213 mile

Speed of the runner = 5.7 mile/hour

$speed=\frac{distance}{time}$

$5.7 mile/hour=\frac{6.8343 miles}{time}$

$time=\frac{6.8343 miles}{5.7 mile/hour}=1.199 hour$

1.199 hour runner will require to cover the 11 km .