The average mark of 13 papers is 80 The average marks of the first 7 papers are 84 and that of the l...........

Quantitative Aptitude(Banking) Average

The average mark of 13 papers is 80. The average marks of the first 7 papers are 84 and that of the last 7 papers is 70. Find the marks obtained in the 7th paper.

This questions was previously asked in

RBI Assistant Prelims (26 March 2022)

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Explanation:

Correct option 5: 38

The average of 13 papers = 80
..the sum of the marks = 13 x 80
⇒ 1040
Average for first 7 papers = 84
:. The sum = 7 x 84
⇒ 588
Average of last 7 papers = 7 x 70
490
..the marks obtained in the 7th paper = (588 +490) - 1040
= 38