Please answer this question I have confusion In an - Maths - Algebraic Expressions

Question

Please answer this question I have confusion

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

Abhishek Kumar · Accepted Answer

Please answer this question......I have confusion..... In an examination, 30% of the candidates failed in English, 35% failed in G.K. and 27% failed in both the subjects. If 310 candidates passed in both, how many candidates appeared in the examination?

Please answer this question......I have confusion.....

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