Q21
A school has only four classes that contain 10, 20, 30 and 40 students respectively. The pass percentage of these classes are 20%, 30%, 60% and 100% respectively. Find the pass % of the entire school.
A.
56%
B.
76%
C.
34%
D.
66%
AnswerE.
None of these
Answer: Option D
Solution
Answer: Option D
Solution:
The number of pass candidates are 2 + 6 + 18 + 40 = 66 out of total 100.Hence, Pass percentage = 66%