Here's that math question I shared with you this morning, in case you want to try it on your co-workers.
A hammer and nail cost $1.10.
The hammer costs one dollar more than the nail.
How much does the nail cost?
Did you say 10 cents? Yup, I did too. The correct answer is 5 cents. Do the math and then slap your hand upside your head and say "duh"