Question
The average age of 32 children and their teacher's age
are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?Solution
Sum of the age of total children and teacher = 33 × 28 = 924 Sum of the age of children after excluding = 32 × 27 = 864 Teacher’s age = 924 – 864 = 60 years
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