The average of 27 numbers is 60. If one number is changed

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The average of 27 numbers is 60. If one number is changed from 28 to 82, the average is

Given that , The average of 27 numbers is 60.
If one number is changed from 28 to 82 ,then
Difference of numbers = 82 – 28 = 54

∴ Required average = 60 +	54	= 62
	27

Second method to solve this question with the help of given formula :
Here, n = 27, m = 60 , b = 28, a = 82

New Average = m +	(a - b)
	n

New Average = 60 +	(82 - 28)
	27

New Average = 60 +	54
	27

New Average = 62