Talking through 3 AMC 8 problems with my son

My son was working on the 1993 AMC 8 yesterday and had trouble with a few problems. Today we sat down and talked through those problem.

The first was problem 17:

Here’s what my son had to say:

Next was problem 19:

Here’s what he had to say about this problem:

Next was problem 24:

Here’s what he had to say about this problem:

I like these old contest problems. They lead to really nice conversations!