Question

If three-tenths of the visitors were adults and there were 100 visitors , how many visitors were adults ?

Answer 1

There are 30 adults. Because if there are only three-tenths of adult visitors, you're finding 30% of 100 adult visitors. There are 30 Adults. 

Answer 2

To find the answer you times 3/10 by 100 to find how many visitors were adults, you are finding 30% of the visitors. In this case 3/10 x 100 = 30, so 30 of the visitors are adults. :)