Answer:
25 visitors who will buy exactly one costume.
Explanation:
Let's look at the information that we have already:
353 visitors that purchased nothing
118 visitors that purchased one costume
8 visitors that purchased more than 1
So, in total on that day, he had 353 + 118 + 8 = 479 visitors.
Out of those 479 visitors, 118 of them purchased something.
Lets find the percent of visitors that purchased something.
118/479 = 0.246, which is 24.6 percent
So, if he is expecting 100 visitors next week, we can just find 24.6 % of 100.
That is the same as 100 * 0.246
Which is: 24.6 visitors who will buy exactly one costume.
HOWEVER, we need to round that value to the nearest whole number, which is 25 visitors who will buy exactly one costume.
I hope this helped!
~~~Harsha~~~