Hello, reader! If you intend to post a link to this blog on Twitter, be aware that for utterly mysterious reasons, Twitter thinks this blog is spam, and will prevent you from linking to it. Here's a workaround: change the .com in the address to .ca. I call it the "Maple Leaf Loophole." And thanks for sharing!

Friday, October 17, 2008

A fun little limit problem

You drive the first half of a car trip at 30 mph. How fast would you have to travel during the second half of your trip so that the average speed of the entire trip was 60 mph?