Sara has gone to work for 60 days. On 39 of those days she arrived at work before 8:30A.M. On the rest of the days she arrived after 8:30A.M What is the experimental probability that she will arrive at work after 8:30A.M the next day she goes to work

21/60 = ?

To calculate the experimental probability that Sara will arrive at work after 8:30 A.M. the next day she goes to work, we need to determine the ratio of times she arrived after 8:30 A.M. to the total number of days she went to work.

Given the information provided, Sara has worked for 60 days, and on 39 of those days, she arrived at work before 8:30 A.M. So, the number of days she arrived after 8:30 A.M. would be 60 - 39 = 21 days.

To find the experimental probability, we divide the number of times Sara arrived after 8:30 A.M. by the total number of days she went to work:

Experimental Probability = Number of days Sara arrived after 8:30 A.M. / Total number of days Sara went to work

Experimental Probability = 21 / 60

Therefore, the experimental probability that Sara will arrive at work after 8:30 A.M. the next day she goes to work is approximately 0.35 or 35%.