The average age of a group of `10` students and a teacher is `18 yr`. If the age of the teacher is excluded the average

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Q 2210056819.     The average age of a group of `10` students and a teacher is
`18 yr`. If the age of the teacher is excluded the average falls
by `1 yr`. What is the age of the teacher?
IBPS-CLERK 2017 Mock Prelims
A

`30 yr`

B

`27 yr`

C

`28 yr`

D

`29 yr`

E

None of these

HINT


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

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