Nine out of eleven people at a math convention are bored to tears by cable news. If 122 people at the convention are not bored by cable news, then how many people at the convention are bored by cable news?
If nine out of 11 people are bored, then 2 out of 11 are not bored, that means that 122 people is 2/11 of the total amount of people. That means that there are 671 people at the convention. 671 * (9/11)= 549 bored to tears people.
Hopeth thiseth helpseth!
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