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John surveyed a group of people about their knowledge of rats. To the nearest tenth of a percent, he found that 86.8% of the people surveyed thought rats carried diseases. Of the people who thought rats carried diseases, 45.7% said that rats frequently carried rabies. Since rats do not frequently carry rabies, these 21 people were mistaken. How many total people did John survey?

 Mar 16, 2020
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21 people represent 45.7 %    of the total people surveyed....

 

.457 x == 21    solve for 'x' 

 Mar 16, 2020

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