Question
Download Solution PDFThe average age of 14 students and their teacher is 20 years. If the teacher is excluded, then their average age reduces by 1.5 years. The teacher’s age is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Total number of people = 15, Average age with teacher = 20 years, Average age without teacher = 18.5 years
Formula used:
Average age × Number of people
Calculations:
Total age with teacher = 20 × 15 = 300 years
Total age of only students = 18.5 × 14 = 259 years
Teacher's age = 300 - 259 = 41 years
Hence, the teacher's age is 41 years.
Last updated on Jun 30, 2025
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