One mile is approximately equal to 1.6 kilometers, or 1.609 kilometers to be more exact.
Therefore, if a person has run 10 kilometers, we use the following ratio:
1 mile : 1.6 kilometers
x miles : 10 kilometers
Cross multiplying and equating the expressions:
10 km = 1.6 km * x miles
x = 6.25
The person will have run 6.25 miles in the 10 kilometer race.
