The average age of 15 students of a class is 15 years.
The average age of 15 students of a class is 15 years. Out of these, the average age of 3 students is 14 years and that of the other 11 students is 16 years. The age of the 15th student is
Answer/Solution
7 years
Steps/Work
Solution
Age of the 15th student =[15x15-(14x3+16x11)]
= (225 - 218)
= 7 years.
Answer D
Age of the 15th student =[15x15-(14x3+16x11)]
= (225 - 218)
= 7 years.
Answer D