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in an exam, 90% passed History and 85% passed English if none of the students failled in both subjects and 225 passed in both subjects, calculate the number of students who have attended the exam.

A. 250

B. 275

C. 300

D. 325

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সঠিক উত্তরঃ C. 300

Explanation:

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in an exam, 90% passed History and 85% passed English if none of the students failled in both subjects and 225 passed in both subjects, calculate the number of students who have attended the exam.