A family member sent this puzzle to us. I think it may have been making some rounds on social media a while back. Be careful with it. Nothing too difficult mathematically, but it will certainly test your observational skills...so pay extra close attention!! And to be honest, one COULD make the case that there are infinitely many viable solutions to this one (that sounds strange, I know, and we'll explain in our solution). Regardless, we'll give you the solution we think is best and most defensible, and we'll show you how we would solve it on Friday.
You can find the solution to this puzzle here.
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Brian and Melanie Fulton both earned doctoral degrees in mathematics at Virginia Tech. They formerly taught math at the university level, and now run a hobby farm while accuracy-checking collegiate mathematics texts. They homeschool their four children, frequently employing the aid of chicken, dairy goat, cat, and dog tutors.