The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacheris appointed in his place. If the mean age of the teachers in this school now is 39 year…

Question

The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacheris appointed in his place. If the mean age of the teachers in this school now is 39 years, then the age (in years)of the newly appointedteacher is_____

Accepted Answer

Correct answer: 35. (35) x_i25=40 \& x_i-60+N25=39 Let age of newly appointed teacher is N ⇒1000-60+N=975 ⇒N=35 year

$The mean age of 25 teachers in a school is 40 years. A teacher retires at the age of 60 years and a new teacheris appointed in his place. If the mean age of the teachers in this school now is 39 years, then the age (in years)of the newly appointedteacher is_____$

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