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The average age of 18 persons was decrea...

The average age of 18 persons was decreased by 4 months. when two of them of age was 32 years and 48 years were replaced by two new person whose difference in the age of 4 years. Find the age of each new person.

Text Solution

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Initial average age=A years.
Final average years=(A-1/3)years.
A=(Sum of ages of 16 personc+32+48)/18
Sum of ages of 16 persons=18A-80
age of first person=x
age of second person=x+4
Final average age=A-1/3=18A-80+2x+4
18A-6=18A-80+2x+4
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