[A]mong respondents age 50 and older, only half of them got the first two answers right and only one-third of them got all three answers right.There's an interesting exchange about what schools should teach re: financial literacy.
And, if you follow the link to JumpStart, you find this:
In 2008, the Jump$tart Coalition also conducted its first national survey designed to measure the financial literacy of college students. The two surveys present contrasting results. The financial literacy of high school students has fallen to its lowest level ever, with a score of just 48.3 percent. The average score for college students on the same 31 question exam, however, was 62.2 percent, nearly 15 percentage points above that of high school seniors. In fact, if measured on the high school senior base of 48.3 percent, college students actually did nearly 29 percent better. In addition, scores improved for every year of college with seniors averaging 64.8 percent. The good news is that American college graduates are close to being financially literate and probably will be so with more life experience. The bad news is that just 25 percent of our young adults are graduating from college and this number appears to have stabilized. This means that 75 percent of young American adults are likely to lack the skills needed to make beneficial financial decisions.
and: interview with an online economics teacher