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Solution:B
Average of 9 numbers =7
Then sum of numbers =9*7=63
Average of 7 numbers =9
Then sum of numbers=9*7=63
Total sum of 16 numbers =63+63=126
Average of 16 numbers =126/16=7 14/16
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Average of 9 numbers =7
Then sum of numbers =9*7=63
Average of 7 numbers =9
Then sum of numbers=9*7=63
Total sum of 16 numbers =63+63=126
Average of 16 numbers =126/16=7 14/16
Like the post if u find it useful to u (like is at top left of the website)!!!
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