Question

In an examination 40 percent students passed in english 85percent passed in math and 75 percent passed in both subjects.If 45 students failed in both subjects then what is the total number of student were there

Answer 1

Total Percent of Students passed = % of students passed in English + % of students passed in Math - % of students passed in both papers

= 80 % + 85% - 75% = 90%

This will give us percent of students failed in both = 100 - 90% = 10%

Which is given equal to 45

Hence 10% of Total students = 45

Total students = 450