JusTLucK04 wrote:
A certain health club offers only yoga classes and spin classes. If all club members take at least one type of class, what percent of members take yoga classes?
(1) 30% of members take both types of classes.
(2) 40% of members take only spin classes.
Here's a step-by-step approach using theDouble Matrix method .
Here, we have a population of health club members, and the two characteristics are:
- taking yoga or not taking yoga
- taking spin classes or not taking spin classes
So, we can
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