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In a town, 64% of the people have computers. 75% of the people had cell phones. 20% of the people who had cell phones didn't have computers. How many people had a computer and a cell phone. Give your answer as a decimal.

 Jun 2, 2016
 #1
avatar+128087 
0

This is easiest to see if we imagine that there are 100 people in the town

 

75%   have  cell phones  = 75.......and 20% of these don't have computers 

 

So  .....  20% of 75 = .20 *75  = 15 who have cell-phones don't have computers

 

Here's the Venn diagram

 

 

So  60%  of the people own computers and cell phones  =  .60

 

 

cool cool cool

 Jun 2, 2016
 #2
avatar+201 
+5

Thank you so much CPhill!

 Jun 2, 2016
 #3
avatar+128087 
0

No prob, mathcalc.....!!!!

 

 

cool cool cool

 Jun 2, 2016

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