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30% of students passed in the Maths test and 38% of students passed in the
Science test. 27% of the students passed in both. Find:
(a) Percentage of students who passed in Maths or Science or both.
(b) Percentage of students who failed.
(c) The total number of students, if 236 students have failed.
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the total number of students if 236 students have failed
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