Collectors have to understand the ins and outs of negotiating and finance. So when this was sent to me last week, I did the puzzle.
You bought a lot of stuff at the antiques auction and want to pay the bill. As fast as you can, add this in your head (no pencils or calculators):
- Take $1,000 and add $40 to it. Add another $1,000.
- Add $30. Now add another $1,000. Then add $20.
- Add another $1,000. Add $10. What is the total?
Fast number calculations can be confusing. Ever hear an auctioneer say: "This ring is set with 20 diamonds that total 5 carats, and you know how valuable a 5-carat diamond is." Why the comparison? Small diamonds are worth much less than one big one. Or: "This is over 100 years old. It belonged to my grandmother and she died at 102." Yes, but did she buy it at birth? Or on her 90th birthday? Always listen carefully when money is involved and don't pay $5,000 for something that should cost you $4,100. Oh, did I mention that I gave a version of this puzzle to my 6th-grade math classes long ago when I was a math teacher?
Any other auctioneer sayings with numbers that you have heard?
