Question

in an examination, 35% students failed in Science , 42 % failed in social studies and 32 % failed in both subjects . find the percentage of total passed student? ​

Answer 1

HII HERE IS YOUR ANSWER

Given:-

35% students failed in Science

42 % failed in social studies

32 % failed in both subjects

Formula used:-

Sci U Ss = n(Sci)+n(Ss)-n(Sci U Ss)

Solution:-

Let total Students be 100x

35x students failed in Science

42x failed in social studies

32x failed in both subjects

Using Formula of Sets.

percentage of total failed students

➾ n(Sci)+n(Ss)-n(Sci U Ss)

➾35x + 42x - 32x

➾45x

   45%