The average of nine numbers is 6. When three new numbers are included, the average of the twelve numbers becomes 7.5. The average of three new numbers is:
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Correct answer: B
Explanation
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SSC MTS 2024 PYQ — Question 10
SSC MTS - 04/11/2024 - (9:00 AM - 11:00 AM) • Quantitative Aptitude • Q10