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Question

The average of 5 numbers is 50. The number 40 was incorrectly written as 60 while calculating. Find the correct average.

A
36
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B
56
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C
46
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D
66
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Solution

The correct option is C 46
Given, average=50
Sum of all numbers5 =50
Sum of all numbers = 50×5 = 250
But, 40 was incorrectly written as 60 so the correct sum = (Sum of all numbers) - 60+ 40
=250- 60+ 40 = 230
Correct average = 2305= 46.


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