In two successive years, 80 and 60 students of a school appeared at th – McqOptions

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1.	In two successive years, 80 and 60 students of a school appeared at the final examination of which 60% and 80% passed respectively. The average rate of students passed (in per cent) is:
A.	68
B.	68 4/7
C.	70
D.	72 3/7
Answer» C. 70

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