The average of 15 numbers is 45. The average of the first six numbers – McqOptions

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1.	The average of 15 numbers is 45. The average of the first six numbers is 42 and the average of the last six numbers is 43. The 7th number is double the 8th number, but 5 more than the 9th number. So, find the 7th number.
A.	68
B.	64
C.	66
D.	62
Answer» B. 64

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