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Mathematics 9 Online
OpenStudy (anonymous):

Lucas made a survey of of students ages in the eleven grade. The AVERAGE is 200 months. He discovers that many students are within 3 months of average age. What equation can I use to determine the age limits for the group of students.?

OpenStudy (gw2011):

200+3=203 200-3=197 Therefore, the limits would be 197 months and 203 months

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