Question

a.
103. A group consists of 150 children. The group is divided into three subgroups viz., A, B and C. in
the ratio of 2:5:3 respectively. The average age of the children in the subgroup A is 8 years. The
average age of the children in the subgroup B is 10 years. The average age of the children in the
subgroup C is 12 years. What is the average age of all the 150 children in the group?
8.5 years​

Answer 1

Answer:

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Answer 2

10.2years is the average of all the 150children in the group