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In a class of 25 students, 12 are wearing a white shirt and 15 are wearing black shoes. what is the percentage of students that have both?

 Feb 4, 2021
 #1
avatar+117835 
+2

12  + 15  -  25  =      27  - 25 =    2 are wearing both

 

12 - 2   = 10   wear white  shirts  only

 

15  - 2    =  13    wear  black shoes only

 

2 + 10+  13  =  25

 

The  %   wearing both is          2  / 25    =    8 / 100  =    8%

 

 

cool cool cool

 Feb 4, 2021
 #2
avatar+267 
0

12+15=27

 

27-25=2 people but we want to know the percent

 

2/25=0.08=8%

 Feb 4, 2021

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