CAT Exam Numerical Ability Age Problem

he average age of 24 boys and their teacher is 15 years. When the teachers age is excluded the average age decreases by one year. The age of the teacher is

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39 years

Age of teacher = 25*15-24*14 = 375-336= 39 years
11 years agoHelpfull: Yes(4) No(1)

Ans=39 years
Total age of boys & teacher=25*15=375 years, if teacher's age=x
given (375-x)/24=14 or x=375-336=39
11 years agoHelpfull: Yes(3) No(3)

CAT Other Question

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