If you’re trying to save words (and who isn’t trying to save these days), you might consider shortening the phrase “10-year-olds and 11-year-olds.” And that’s a good thing, as long as you don’t do it the way the writer on yahoo.com did:
What’s missing here is a hyphen, called a suspensive hyphen, to indicate that the number 10 is connected to “year-olds” in the same way that the number 11 is. The correct phrase is: 10- and 11-year-olds. And be sure to include that space after the suspensive hyphen.
September 25, 2012 at 2:18 pm
It’s funny: When I’m complaining about simple errors, I often say (shout), “My 10-year-old knows how to do it right.” She is an awfully smart kid, but . . . really, folks!
September 25, 2012 at 2:43 pm
Maybe Yahoo! will hire your daughter!
September 25, 2012 at 3:05 pm
I’d like her to aim higher!
September 25, 2012 at 5:03 pm
I’m sure she could do a better job than Yahoo!’s staff.