Hello! Let's analyze it first: after careful analysis of the topic, we find that this topic is actually a simple problem of concentration: 20% of dogs think they are cats and "20% of cats think they are dogs", then 80% of cats think they are cats, cats and dogs are mixed together, and 32% of all cats and dogs think they are cats. Then according to the concentration problem, the ratio of dogs to cats is: (80%-32%): (32%-20%) = 4: 1, and dogs are more than cats 180, so the number of dogs is:180/(4-/.

Answer:

The ratio of the number of dogs and cats is:

( 1? 20%? 32%):(32%? 20%),=48%: 12%,=4: 1;

The number of dogs is:

180÷(4? 1)×4, = 180÷3×4, =60×4, =240 (only);

A: The number of dogs is 240.