February 25, 2017

Homework Help: algebra

Posted by tom on Saturday, February 19, 2011 at 6:23pm.

a speaker was so boring that one-half of the audience left after a few minutes. Five minutes later, one-third of the remaing audience left. Ten minutes later, one-fourth of those remaining left, leaving only nine people in the audience. How many people were in the audience at the beginning of the lecture?

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