How do you convert 7.8 km to miles?

1 Answer
Aug 17, 2016

#x = 4.875 " miles"#

Explanation:

You need to know a conversion factor.

5 miles = 8 km OR 1 mile = 8/5 km OR 1 km = 5/8 mile

For the same distance, the number of miles is less than the number of km.

#7.8 km xx 5/8 = 4.875 " miles"#

Or by direct proportion:

#("miles")/("km") = x/7.8 = 5/8#

#x = (7.8xx5)/8#

#x = 4.875 " miles"#