In an examination, 80% of the students passed in English, 85% in Mathematics and 75% in both English and Mathematics. If 40 students failed in both the subjects the total number of students is

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1. Percentage of people passed = (passed in eng) + (passed in math) – ( passed in both)
   Which is 90% of students passed and 10% failed
   10% of X = 40
   X = 400

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