Total number of students =205 Number of students passed in Math =70 Number of students passed in English =105 and number of students pass in both =30 Now , Number of students passed in Math or English. = Number of students passed in Math + Number of student passed in English - Number of students passed in both =70+105−30=145 So, number of students fail in both subjects = Total number of students - Students passed in Math or English =205−145=60