Brandy asks her 26 classmates where they spent their summer vacations. There were 9 that went to the beach, 6 that went to the mountains, 5 that went on a cruise, and 6 that did not take a vacation.
What is the probability of Brandy’s classmates going on vacation this summer?
First, add up the number of classmates that went on vacation:
9 (beach) + 6 (mountains) + 5 (cruise) = 20 classmates went on vacation
Next, add the number of classmates that did not take a vacation:
6 classmates did not take a vacation
So, in total there were 26 classmates.
The probability of Brandy's classmates going on vacation this summer is:
20 / 26 = 0.769 or 76.9%