Chinese Math Homework Baffles Internet - Shoes, Cat, Whistle Puzzle Explained

A system of equations involving a pair of shoes, a cat, and whistles is the latest emoji math problem that people are arguing about, and it has gone viral on social media sites. The problem was given to primary school students in China, but many adults are finding it difficult. Can you figure it out? Watch the video for the correct answer. My blog post for this video: Sources