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24 November, 23:03

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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  1. 24 November, 23:19
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    Step-by-step explanation:

    (8.5 cm + 16.4 cm) : 16

    = 24.9cm : 16

    = 1.25

    = 1.25 cm
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