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Suppose your friends have the following ice cream flavor preferences: 70% of your friends like chocolate (C). The remaining do not like chocolate. 40% of your friends like sprinkles (S) topping. The remaining do not like sprinkles. 25% of your friends who like Chocolate (C) also like sprinkles (S). Of the friends who like sprinkles, what proportion of this group likes chocolate? (Note: Some answers are rounded to two decimal places.)

 Mar 20, 2016
 #1
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25% of 70% is 17.5%   

 

17.5% like sprinkles and chocolate

 

Since 40% like sprinkles, those who like both are a proportion 17.5/40 of those who like sprinkles

 

17.5/40 = 0.4375  or ≈ 44% 

.

 Mar 20, 2016

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