SOLUTION: The average height of 7 girls and 3 boys is 142cm. What is the average height of the girls if the average height of the boys is 163cm?
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Question 1099512: The average height of 7 girls and 3 boys is 142cm. What is the average height of the girls if the average height of the boys is 163cm? Answer by josgarithmetic(39630) (Show Source):
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