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????

- Math -
**drwls**, Monday, June 15, 2009 at 1:01pm
23-X owned digital camers ONLY

18-X owned a cell phone ONLY

X owned both

2X owned neither.

Those are the only four possibilities, so the sum must equal 50.

41 - 2X +X +2X = 50

41 +X = 50

X = 9

- Math -
**Anonymous**, Monday, November 17, 2014 at 5:39pm
how to represent this in a venn diagram

in a survey of 50 students , 23 owned cellular phones, 18 owned digital cameras, x owned cellular phones and digital cameras,2x owned neither

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