anonymous
  • anonymous
In a survey, 36% of the students said thee keep an electronic diary. There were 900 students who kept an electronic diary. How many students were in the survey?
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
6
anonymous
  • anonymous
900/36 *100 =25*100=2500
anonymous
  • anonymous
R u sure?

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AriPotta
  • AriPotta
yea, that's right
anonymous
  • anonymous
see out of 100% only 36% have that electronic diary so 900 is just 36% and we need to find 100%
AriPotta
  • AriPotta
|dw:1349680854965:dw|
AriPotta
  • AriPotta
so 90000 = 36x x = 2500
anonymous
  • anonymous
thnks
AriPotta
  • AriPotta
no problem

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