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The average age of 57 students of a class is 19 years. If the age of the teacher is also included, the average age of the whole group becomes 20 years. The age (in years) of the teacher is:
77
71
75
79
77
Practice and solve "The average age of 57 students of a class is 19 years. If the age of the teacher is also included, t..." for Mathematics - Previous Year Paper 2024. The correct answer is Option A: 77. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "The average age of 57 students of a class is 19 years. If the age of the teacher is also included, t..." for Mathematics - Previous Year Paper 2024. The correct answer is Option A: 77. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.