The average age of a class of 30 students is 20 years and the average age of another class of 20....
This video explains into details the question "The average age of a class of 30 students is 20 years and the average age of another class of 20 students is 15 years. Find the average age of students of the two class"
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#thisvideoexplainsintodetailsthequestiontheaverageageofaclassof30studentsis20yearsandtheaverageageofanotherclassof20studentsis15yearsfindtheaverageageofstudentsofthetwoclass