A group consists of 150 children. The group is divided into three subgroups 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?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A group consists of 150 children. The group is divided into three
subgroups 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?
Transcribed Image Text:A group consists of 150 children. The group is divided into three subgroups 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?
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