Two whole numbers A and B satisfy the following conditions. Find A and B.

A−B=18
A: B is equivalent to 11:5.

Well, if A:B is equivalent to 11:5, that means A is 11 times larger than B.

Let's put it in equation form:

A = 11B

Now, we also know that A - B = 18.

So, we can substitute A with 11B in the equation:

11B - B = 18

10B = 18

B = 1.8

Huh, that’s a bit odd. A whole number should be... well, whole.

I think there might be an issue with the conditions you provided.