The average age of a class of 40 students is 18 yr. When the teachers age is also included to calculate

Ask n AnswerCategory: ArithmeticThe average age of a class of 40 students is 18 yr. When the teachers age is also included to calculate
vasista Staff asked 11 months ago

The average age of a class of 40 students is 18 yr. When the teachers age is also included to calculate the average age becomes 19 yr. What is the teacher’s age?

(a) 59 yr

(b) 69 yr

(c) 49 yr

(d) 39 yr

 

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