Question
There are 3 girls and some boys.
The total height of the children is 1470 cm.
The average height of the 3 girls is 158 cm.
The average height of the boys is 166cm.
How many boys are there?
3 m

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There are 3 girls and some boys.
The total height of the children is 1470 cm.
The average height of the 3 girls is 158 cm.
The average height of the boys is 166cm.
How many boys are there?