Each part of the race is 1/10 of a mile. And Marsha finishes 5 parts. Every time you complete a checkpoint, you finish that part of the race. If you only finish one part, then you only completed 1/10 of the race. If two, then 2/10. And so one.
Or we can multiply 1/10 by 5.
1/10 * 5 = 5/10
Now simplify it.
5/10 = 1/2
So, the answer to this question would be C 1/2 mile.
