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Mathematics, 03.07.2020 15:01 hgghukghj1814

The mean length of 9 childrens' big finger is 8.5cm. The mean length of 7 adults' big finger is 16.4cm. What is the mean length (rounded to 2 DP) of these 16 people's big finger?

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The mean length of 9 childrens' big finger is 8.5cm. The mean length of 7 adults' big finger is 16.4...
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