7. The average percentage marks of 25 students in a class is 60. If th – InterviewSolution

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1.	7. The average percentage marks of 25 students in a class is 60. If the marks of one morestudent is included, the average increases by one. The percentage marks of the student is?(a) 80(b) 86(c) 90(d) 78
Answer» total marks = 60×25 = 1500 now one more student added so average increase by 1 so new total = 61×26 = 1586 so percentage of new student = 1586 - 1500 = 86

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