To find out how many candidates appeared in an examination

Question

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

Answer 1

Draw a Venn diagram!

3% only English

27% both

8% only GK

38% failed one or more

62% passed both

 

Can you finish and answer?