Answer:
Answer is C, 7/20
Step-by-step explanation:
There are total 60 days and on the first 39 days she arrives before 8:30 am this means that we have only 21 days where she arrives after 8:30 am.
Now the question is asking: What are the chances of her arriving after 8:30 am that means that we only have 21 days where its [tex]\frac{21}{60}[/tex].
Dividing the numerator and denominator by 3 we end up with C.
Hope this helps
