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posted by Carol Tuesday, March 5, 2013 at 8:58pm.
More than 18'students in an algebra class pass the first test. This is about three-fifths of the class. How many students are in the class? How do you know?
(3/5)x > 18 x > 18 / (3/5) x > 18 * (5/3) x > 30
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