The average age of 24 students is 15 5 years The age of the teacher is 24 years more than the averag...........

Quantitative Aptitude (CPO) Average

The average age of 24 students is 15.5 years. The age of the teacher is 24 years more than the average age of all the students and teacher. What is the age (in years) of the teacher?

This questions was previously asked in

SSC CPO 13th Dec 2019 Shift-2

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41.4

40.5

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Explanation:

Correct Option is 4: $0.5 years

Let age of teacher be x, then Average age of 24 students = 15.5 years
According to the question
(15.5 x 24 + x)/25 = x - 24
15.5 x 24 + x = 25x-24 x 25
25x-x = 24 x 25 + 15.5 x 24
24x24 (25+ 15.5)
x = 40.5 years