Question
There are 3 boys and 8 girls.
The average height of the 3 boys is 120 cm.
The average height of 8 girls is 164 cm.
What is the average height of all the children?
2 m

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There are 3 boys and 8 girls.
The average height of the 3 boys is 120 cm.
The average height of 8 girls is 164 cm.
What is the average height of all the children?