In a survey, 540 people, or 80%, said they attended a movie at least once a month. how many people were surveyed?

X = total amount of people

80% of x = 540
.8x = 540
x = 675

There were 675 people

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.