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Question
In an examination, 80% students passed in Physics, 70% in Chemistry while 15% failed in both the subjects. If 325 students passed in both the subjects. Find the total number of students who appeared in the examination.
In an examination, 80% students passed in Physics, 70% in Chemistry while 15% failed in both the subjects. If 325 students passed in both the subjects. Find the total number of students who appeared in the examination.
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Solution
The correct option is A 500
15% student failed in both subjects
So total passed = 85%
80 + 70 = 85+x, x = 65%
65% of total = 325
total = 500.
15% student failed in both subjects
So total passed = 85%
80 + 70 = 85+x, x = 65%
65% of total = 325
total = 500.
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