SSC CHSL 6 Dec 2015 Shift 1 Paper

Question : 128 of 200

Marks: +1, -0

The average of 8 numbers is 21. If each of the numbers is multiplied by 8, the average of the new set of numbers is

Solution:

Average of 8 numbers = 21
⇒ Sum of numbers = 21 × 8 = 168
If each of the numbers is multiplied by 8, then the total sum is also multiplied by 8, ⇒ New sum = 168 × 8
∴ Average of new set =

{168×8}/8=168

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