Three men check into a cheap motel, and to save money, they decided to share a room. The clerk said the room would be $30 for the night, so each man pulled out $10 and handed it to her.
The men go to their room and just a few minutes later the clerk knocks on their door to tell them she accidentally overcharged for their room; it was supposed to be $25. So, she had five ones and handed each man $1 and then they told her to keep the change.
Okay, here we go. The men originally spent $10 a piece for their room, but then, the clerk handed each man a $1 bill and of course they told her to keep $2 of the refund she was giving them. From an easy math perspective, each man originally invested $10 in the room but with getting a dollar, back their investment dropped to $9 or $27 total, plus the two dollars they gave away to the clerk. That's $29 dollars total so what happened to the other dollar?
The answer is below but please attempt to figure it out on your own for the mental exercise. Thanks!
The rationale for the confusion above, is one of the reasons people come up with opposing views which are both true depending upon how someone pitches it. I clearly showed that the dollar was missing but all someone would need to do is come at it from a different angle, and he or she would have a strong argument. In other words, she kept $25 for the room, but she gave three dollars to the guys, and she kept two dollars, this clearly demonstrates the dollar isn't missing because it adds up to $30. But someone could also prove a dollar is missing. How's your mind doing? 😎