The average of 9 numbers is 20. If the number 30 is also included, th – McqOptions

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1.	The average of 9 numbers is 20. If the number 30 is also included, then what will be the average of these 10 numbers?
A.	20.5
B.	21
C.	19.5
D.	21.5
Answer» C. 19.5

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