Question

in an examination 76% students passed in mathematics,27% failed in English and 20% failed in both 1)find the percentage of students who failed in one or both the subjects 2) if 345 students passed in both the subject find the total number of students​

Answer 1

Answer:

31%, 431

Step-by-step explanation:

1) Percentage of students who failed in Maths = 100 - 76 = 24%

Percentage of students who failed in English = 27%

Percentage of students who failed in both = 20%

Students who passed in either one subject or both subjects =24 + 27 - 20 = 31%

2) Percentage of students who passed in both = 100 - 20 =80%

     80% => 345

    1 % => 345/80 = 4.3125

   100% => 4.3125 * 100 = 431 (approx)