The average age of 15 students of a class is15 years. Out of them, the average age of 5 students is
14 years and that of the other 9 students is 16 years. The age of the 15th student is :
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5
Answer:
Total age of 15 students =(15×15)years=225years
Total age of 5 students =(5×14)years=70years
Total age of other 9 students =(9×16)years=144years
∴ Age of the 15th student =225−(70+144)=225−214=11years.
Answered by
0
Answer:
11 year
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