From a school 56, 64, and 80 students respectively appeared in the final examination in three successive years, out of which 75%, 87.5% and 93.75%. Find the average percentage of students who passed in those three years.
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In two successive years 100 and 75 students of a school appeared at the final examination. Respectively 75% and 60% of them passed. The average rate of pass is:
A) 6847%
B) 78%
C) 8012%
D) 80%
Correct Answer:
A) 6847%
Description for Correct answer:
Passed students in first year
=100×75100=75
Passed students in second year
=75×60100=45
Total passed students
=75+45=120
Required percentage
=120(100+75)×100=120175×100
=6847%
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