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A customer survey in a village showed that the market share of three brands of cooking fat as follows;45%used brand A  50% used brand B 37.5% used brand C 10% used brand A only 30% used brand B only 15% used brand C only 2.5% used all the three brands and 2.5% used brands B and C only i)Draw a Venn diagram representing the above information ii)Determine the percentage of consumers who used None of the three brands

A customer survey in a village showed that the market share of three brands of cooking fat as follows;45%used brand A  50% used brand B 37.5% used brand C 10% used brand A only 30% used brand B only 15% used brand C only 2.5% used all the three brands and 2.5% used brands B and C only i)Draw a Venn diagram representing the above information ii)Determine the percentage of consumers who used None of the three brands

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A customer survey in a village showed that the market share of three brands of cooking fat as follows;45%used brand A 

50% used brand B

37.5% used brand C

10% used brand A only

30% used brand B only

15% used brand C only

2.5% used all the three brands and

2.5% used brands B and C only

i)Draw a Venn diagram representing the above information

ii)Determine the percentage of consumers who used None of the three brands

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