`10` years ago the average age of all `25` teachers of the Boy’s college was `45` years.` 4` years ago, the principal

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Q 2217223180.     `10` years ago the average age of all `25` teachers of the Boy’s college was `45` years.` 4` years ago, the principal has retired from his post at the age of `60` years. So after one year a new principal whose age was `54 ` years was recruited from outside. The present average age of all the teachers is, if principal is also considered as a teacher:
IBPS-PO 2017 Mock Mains
A

`54 (18)/(25) `yeaars

B

`55 (17)/(25)` years

C

`49 (1/2)` years

D

`54 (17)/(25)` years

E

None of these

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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