Question 64

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

Solution

Average of 12 numbers = 9

If each number is multiplied by 2 and added to 3, then the average will also change accordingly

=> New average = $$9 \times 2+3=21$$

=> Ans - (C)

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