Question

Average of20 numbers is 25 if each number is multiplied by 6 find the new average

Answer 1

Average of 20 numbers is 6 means

x/20 = 25

x = 20×25

x = 500

it is the sum of the numbers

given each number is multiplied by 6 , it is equal to sum of the numbers multiplied by 6

so,

sum of the numbers = 500×6 = 3000

Average is = 3000/20 = 300/2 = 150

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