Railways
Sample Paper
RRB (Group D) Sample Test Paper-14
question_answer
Out of 10 teachers of a school, one teacher retires and in his place, a new teacher of age 25 years joins. As a result, average age of teachers is reduced by 3 years. The age (in years) of the retired teacher is :
A) 50
B) 58
C) 60
D) 55
Correct Answer:
D
Solution :
[d] Age of retired teacher=\[25+3\times 10=55\] years