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Overlapping sets

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by Amrabdelnaby » Thu Dec 03, 2015 8:55 am
Dear All,

I solved the following in 4 mintues.

I did a venn diagram, broke it down to partitions, a,b,c,d,e,f,g.

Created many equations and solved for g.

it took so long because i created so many equations.

could you please provide me with a less complicated more straight forward solution?

thank you

Of the 300 subjects who participated in an experiment using virtual reality therapy to reduce their fear of heights, 40% experienced sweaty palms, 30% experienced vomiting and 75% experienced dizziness. If all of the subjects experienced atleast one of these effects and 35% of the subjects experienced exactly of these effects, how many of the subjects experienced only one of these subjects?

A)105
B) 125
C) 130
D) 180
E) 195
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Source: — Problem Solving |

by [email protected] » Thu Dec 03, 2015 9:49 am
Hi Amrabdelnaby,

Here's a discussion on this question from earlier this year:

https://www.beatthegmat.com/og-178-t284236.html

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