Question 128

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 = $$21\times8=168$$

If each of the numbers is multiplied by 8, then the total sum is also multiplied by 8, => New sum = $$168\times8$$

$$\therefore$$ Average of new set = $$\frac{168\times8}{8}=168$$

=> Ans - (B)

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