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The average score achieved by Subir in 15 tests is 29. Ruchira has averaged 27 so far, but has given only 11 Tests so far. How much does Ruchira score on average in the remaining four Tests to match Subir's performance?

The average score achieved by Subir in 15 tests is 29. Ruchira has averaged 27 so far, but has given only 11 Tests so far. How much does Ruchira score on average in the remaining four Tests to match Subir's performance? Correct Answer 34.5

Given:

The average score of Subir in 15 tests = 29

The average score of Ruchira in 11 tests = 27

Concept used:

Total marks scored = average marks obtained in tests × number of tests

Calculation:

Total marks scored by Subir = 29 × 15 = 435

Total marks scored by Ruchira = 27 × 11 = 297

Marks to be scored by Ruchira to reach Subir’s score = 435 – 297 = 138

Average marks to be obtained by Ruchira in the next four tests = 138/4 = 34.5

∴ The average mark to be obtained by Ruchira on the next four tests is 34.5.

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