The average age of 9 members in a team is 24yrs.When a new member joins the team ,the average age becomes 27yrs.Whhat is the age of new member.
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The sum of the ages of nine member =9x24=216......(i)
the sum of the ten members =10x27=270...(ii)
age of 10th number =270-216=54
Therefore, the age of the 10th member is 54 years.
the sum of the ten members =10x27=270...(ii)
age of 10th number =270-216=54
Therefore, the age of the 10th member is 54 years.
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Let the age of new member be x.
Taking the average of previous members and new member.
24 + x/2 = 27
24 + x = 54
x = 30 years
Taking the average of previous members and new member.
24 + x/2 = 27
24 + x = 54
x = 30 years
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