Question
The average age of a jury of 5 is 40,if a member aged 35 resigns and a man aged 25 becomes a member, then the average age of the new jury is
Solution
Ans.B
Sum of 5 members = 40*5 = 200 years
∴sum of remaining 4 members = 200 – 35 =165 years
New sum of 5 members = 165+25 = 190 years
∴ Average age of new jury = 190/5 = 38 years
Ans.B
Sum of 5 members = 40*5 = 200 years
∴sum of remaining 4 members = 200 – 35 =165 years
New sum of 5 members = 165+25 = 190 years
∴ Average age of new jury = 190/5 = 38 years