When 2 is subtracted from each of the given n numbers, then the sum of the numbers so obtained is 102 . When 5 is subtracted from each of them, then the sum of the numbers so obtained is 12. What is the average of the given n numbers?

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When 2 is subtracted from each of the given n numbers, then the sum of the numbers so obtained is 102 . When 5 is subtracted from each of them, then the sum of the numbers so obtained is 12. What is the average of the given n numbers?

B5.2

C5.4

D5.8

Answer:

C. 5.4

Read Explanation:

Sum of n numbers – 2n = 102 ….(i) Sum of n numbers – 5n = 12 …….(ii) 3n = 90 n = 30 (sum of n numbers) – 60 = 102 Sum of n numbers = 162 Average = 162/30 = 5.4

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