in a group of 90 people 35 people drink tea only, 30 people drink coffee only, 15 people drinks both tea and coffee .find the number of people who drink neither of these.
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total no. of people=90
no. of people who drink tea only=35
no. of people who drink coffee only=30
no. of people who drink both=15
no. of people who drink neither of these=90-( 35+30+15 )
=90-80
=10
hence 10 people don't drink neither of these.
hope this helps....
no. of people who drink tea only=35
no. of people who drink coffee only=30
no. of people who drink both=15
no. of people who drink neither of these=90-( 35+30+15 )
=90-80
=10
hence 10 people don't drink neither of these.
hope this helps....
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