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April 26, 2015

Homework Help: Math

Posted by REBA on Monday, June 15, 2009 at 12:50pm.

In a survey of 50 students, 23 owned cellular phones, 18 ownded digital cameras, X owned cellular phones and digital camera, 2X owned neither.
a) How do i write an expression in X for the Total number of students in the survey and how do i find for X????

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