The Horse Problem
The following problem is adapted from the Marilyn Burns' video, "About Teaching Mathematics." (Her problem uses different numbers and was about a horse, not a truck.) She takes this problem to the streets, and various adults give lots of different answers. When I've used it in workshops, even among a mathy crowd, I get lots of different answers, too. What's your answer?

Several solutions and an analysis of submitted responses will be posted on September 20 at http://mathjokes4mathyfolks.wordpress.com/2012/09/20/stolen-truck-solution.
Sign in to Google to save your progress. Learn more
A man buys a truck for $600, then sells it for $700. Later, he decides to buy it back again and pays $800 dollars. However, someone offers him $900, so he sells it again. After all these transactions, did he make money, lose money, or break even? Enter a negative number if he lost money, 0 if he broke even, or a positive number if he made money.
Your age?
Clear selection
Submit
Clear form
Never submit passwords through Google Forms.
GoogleForms
This content is neither created nor endorsed by Google.