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Sneha got an average of 25 marks in 16 exams. Priyal got an average of 23 marks but appeared in only 12 examinations. What is the average marks obtained by Priyal in the remaining 4 examinations to be equal to Sneha's performance?
1. 25
2. 27
3. 31
4. 29

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Best answer
Correct Answer - Option 3 : 31

Given:

Sneha's average marks in 16 exams = 25 

Priyal's average marks in 12 exams = 23 

Formula used:

Average marks in n exams = Sum of the marks/n 

Calculation:

As per the question; 

Sneha's average marks in 16 exams = Priyal's average marks in 16 exams 

⇒ 25 = 23 + Average marks in 4 exams 

Sum of Sneha's marks in 16 exams = 25 × 16 = 400

Sum of Priyal's marks in 12 exams = 23 × 12 = 276

Sum of Priyal's marks in remaining 4 exams in order to match with Sneha's performance = 400 - 276 

⇒ 124 

∴ Average marks of Priyal in remaining 4 exams = 124/4 

⇒ 31

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