I'm not ashamed to admit that I was confused by my son's second grade math homework this afternoon. He's been doing a unit that uses surveys as the basis for problem solving: 7 children voted for cats. 5 children voted for dogs. How many more children voted for cats than for dogs? Simple enough.
4 children voted for both dogs and cats. 3 children voted for none. Here's where I lost my way. Does that mean four voted for cats and four for dogs? Or four cast a vote for "both"? Or that four children cast two votes?
I know, I'm probably just over-thinking this, but the way the question was phrased left me confused!
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