While finding the average of 10 given numbers, a student,

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While finding the average of 10 given numbers, a student, by mistake, wrote 64 in place of a number 46 and got his correct average 50. The correct average of the given numbers is :

According to question ,
Difference of numbers = 64 – 46 = 18

Correct average = 50 –	18
	10

Correct average = 50 – 1.8 = 48.2
Second method to solve this question with the help of given formula :
Here, n = 10, m = 50 , a = 46, b = 64

Correct Average = m +	(a -b)
	n

Correct Average = 50 +	(46 - 64)
	10

Correct Average = 50 -	18
	10

Correct Average = 50 – 1.8 = 48.2