Leo put $750 into a savings account. After 4 years his balance was $847.50. What was the simple interest rate on his account

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.

For a 0.25 pfor b o.3pp (0.25+0.3)=0.28