the average age of nine members in a team is 24 years.When a new member joins the team, the average age of the team becomes 27 years. what the age of the new member?
Answers
Answered by
0
let the sum of the ages of the old nine members be x
and let age of the new member be y
now...
avg of ages of old nine members = 24
x/9=24
x=216 ----(1)
now
avg of the ages of the old nine members and the new member = 27
(x+y)/10=27
x+y=270
from (1) x=216
216+y=270
y=270-216
y=54
therefore the age of the new person is 54 yrs.
hope this helps:p
and let age of the new member be y
now...
avg of ages of old nine members = 24
x/9=24
x=216 ----(1)
now
avg of the ages of the old nine members and the new member = 27
(x+y)/10=27
x+y=270
from (1) x=216
216+y=270
y=270-216
y=54
therefore the age of the new person is 54 yrs.
hope this helps:p
Similar questions