Answers

2014-06-03T11:22:34+05:30
Let sum of ages of 18 students = x
⇒x/18=39
x = 18 X 39 = 702
average of first 17 = 41
sum of  ages of 1st 17 students = 697
therefore, age of last student = 702 - 697 = 5
The age of last student is 5.
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