Question
There are 9 boys and 6 girls.
The average height of the 9 boys is 110 cm.
The average height of 6 girls is 150 cm.
What is the average height of all the children?
2 m

Click button first when a symbol is required. X

There are 9 boys and 6 girls.
The average height of the 9 boys is 110 cm.
The average height of 6 girls is 150 cm.
What is the average height of all the children?