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If the average age of 18 student is 39 yrs. and the average of first 17 student is 41 yrs. and the 2nd 17 student is 44 yrs then what is the age of the last student.
Answers (1)
Let the age of first and the last student be a and b respectively
According to question
Total age of first 17 student = 697
Total age of 18 student = 702
age of student b =Total age of 18 student - Total age of first 17 student = 5
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