# Average age of 12men is 20 years if age of one more is added to it the average is decreased by one year find out the age of that man

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by tanima

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by tanima

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The age of the other man should be 7 as avg will be 247 when added.

Solution:

Sum of ages of 12 men = average age * number of men

= 20 *12

= 240

Let the age of newly added man = x

therefore average age = sum of ages of 13 men / number of men

19 = (240 + x ) / 13

19*13 = 240+x

247 = 240 + x

247 - 240 = x

7 = x

Therefore the age of the newly added person = 7 years.

Hope this is helpful!!!