72% of the students of certain class took biology and 44% took mathema – McqOptions

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1.	72% of the students of certain class took biology and 44% took mathematics. If each student took at least one of biology or mathematics and 40 students took both of these subjects, the total number of students in the class is
A.	200
B.	240
C.	250
D.	320
Answer» D. 320

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