there are 90 green and 60 blue jolly ranchers in a bag. Of these 9 green and 3 blue were sour. What percentage of the bag is sour

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.