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The average marks in English obtained by 300 students is 45. The average marks of first 100 and last 100 students are 70 and 20 respectively. The average marks of the remaining 100 students is


A) 70

B) 20

C) 45

D) 50

Correct Answer:
C) 45

Description for Correct answer:

Total marks of 300 students = 300 x 45 = 13,500

Total marks of first 100 students = 100 X 70 = 7000

Total marks of last 100 students =100 X 20=2000

Total marks of remaining 100 students = 13500-(7000 + 2000)

=13500 - 9000 = 4500

Average marks of remaining 100 students = \( \large\frac{4500}{100} \) =  45


Part of solved TNPSC Question Paper-2013 questions and answers : Exams >> TNPSC >> TNPSC Question Paper-2013




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