In a class of 150 students 50 students passed in mathematics and 40 students failed only in chemistry and 20 students failed in both the subjects then find how many students passed in both the subjects.
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90 students are passed in both subject's
ajeetsinghsmsit:
How
But answer is 10
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Total number of students = 150
Total number of students that passed math = 50
Total number of student that failed chemistry = 40
Total number of students that failed both = 20
Find the number of students that failed at least 1 subject:
Number of students that failed math = 150 - 50 = 100
Number of students that failed chemistry = 40
Number of students that failed both = 20
Number of students that failed 1 subject = 100 + 40 - 20 = 120
Find the number of students that passed both:
Total number of students = 150
Number of students that failed 1 subject = 120
Total number of students that failed both = 20
Total number of students that passed both = 150 - 120 - 20 = 10
Answer: 10 students passed both
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