Question

In an examination 30 per cent of the candidates failed in English, 35 per cent failed in GK and 27 per cent failed in both the subjects.If 310 candidates passed in both, how many candidates appeared in the examination?​

Answer 1

Step-by-step explanation:

In a examination 30% of the candidate failed in English, 35% failed in G.K. and 27% failed in both the subject. If 310 candidates passed in both, how many candidates appeared in the examination?

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Text Solution

Solution :

Here,

students failed in English and

failed in G.K.<br>

students failed in both.<br> So, percentage of students that failed only in English

<br> Percentage of students that failed only in G.K.

<br>

Percentage of students passed

<br> Let total number of students appeared in exam are

.<br> Then,

<br>

<br>

students appeared in the examination.<br>