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consumption of tea and coffee in Drinkville
Posted 16 May 2014 - 05:42 PM
Two surveys were published by two separate marketing organisations on consumption of tea and coffee in Drinkville.
The first organisation interviewed 100 people and the results showed that
78 of them drink coffee
71 of them drink tea
48 of them drink both coffee and tea.
The second organisation interviewed 115 people and the results showed that
91 of them drink coffee
82 of them drink tea
58 of them drink both coffee and tea
Which of these two results are not correct? Justify your answer
Posted 22 May 2014 - 12:30 PM
Ya think maybe we just did someone's homework problem?
Vidi vici veni.
Posted 22 May 2014 - 01:33 PM
Spoiler for looks like
Edited by BMAD, 22 May 2014 - 01:34 PM.
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