Jill is paid $991 per week, plus also recieves 15% commission on sales made during the week. If Jill recieves a $3965.35 paycheck this week, how much did Jill have in sales

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.