The averageageof40 students of a class is 15 years . when 10 new students are admitted the average age is increased by 0.2 year . the average age of the new student is
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Sum of the ages of 40 students = 15*40 = 600
Sum of the ages of 40+10 students = 15.2*50
= 760
The average age of 10 new students = 760-600/10 = 160/10 = 16
Sum of the ages of 40+10 students = 15.2*50
= 760
The average age of 10 new students = 760-600/10 = 160/10 = 16
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