In a class of 150 students, 40 passed in social studies, 90 passed in science and 30 failed in both the subjects. How many students passed in at most one subject among science and social studies
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90 students have at least passed
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Step-by-step explanation:
40 passed in social studies
Failed in Social Studies = 150-40 = 110
90 Passed in Science
Failed in Science = 150-90 = 60
Failed in Both = 30 = Passes in None
Total Students = Failed in SS + Failed in S - Failed in Both + Failed in None
=> 150 = 110 + 60 - 30 + Failed in None
=> Failed in None = 10 = Passed in Both
Only Passes in SS = Passed in SS - Passed in Both = 40 - 10 = 30
Only Passes in S = Passed in S - Passed in Both = 90 - 10 = 80
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