In a survey of 400 students in a school

Asked by admin @ 13/08/2021 in Math viewed by 285 People

In a survey of 400 students in a school , 100 were listed as taking apple juice , 150 taking orange juice and 75 taking both. how many students are taking either apple or orange juice

Answered by admin @ 13/08/2021

Number of students taking apple juice = n(A) =100
number of students taking orange juice = n(O) = 150
number of students taking both = n(A ∩O) =75
number of students taking either apple or orange juice = n(A∪O)

n(A∪O) = n(A)+n(O)-n(A∩O)

=100+150-75
=100+75
=175

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