Question

One number is 7 more than another. The difference between their squares is 231. What are the numbers?

Answer 1

so according to the answer the answer must be non integer

Answer 2

I'm not so sure because I tried solving this problem and I have:

15 & 8: equal 289 as final ans.
14 & 7: equal 245 as final ans.
13 & 6: equal 205 as final ans.
12 & 5: equal 169 as final ans.
11 & 4: equal 137 as final ans.