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03-07-2020
Mathematics

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

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03-07-2020

Step-by-step explanation:

(8.5 cm + 16.4 cm) ÷ 16

= 24.9cm ÷ 16

= 1.25

= 1.25 cm

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