Question

In an examination, 50% of the students passed in science and 75 % passed in social, while 20 % students failed in both the subjects. If 270 students passed in both subjects, find the total number of students who appear in the exam ? ​

Answer 1

Answer:

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Step-by-step explanation:

As 10% failed in both subjects

So 90% students passed in at least one exam

(90100)(90100) * x=300

x=333.33