The instructor has learned that for the 30 students in her class, the ratio of students who do not own a computer to those who do is 2 to 1. how many students in the class own their own computer?
by 
watts316
ANSWERS: 1
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the ratio menas that for every three people, 2 do not own a computer and 1 does. Now three goes into thirty 10 times, so if you multiply the number who do not own a computer (2) you get twenty. This leaves 10 (30-20) that own a computer.
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