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aloading2256
27.04.2021 •
Mathematics
What are the answers to both questions?
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Ответ:
⇒ 60% of the members are 32 years old.
40% of the members are women and the average age of women is 28 years old.
⇒ 40% of the members are 28 years old.
Average age = 0.6 x 32 + 0.4 x 28
Average age = 19.2 + 11.2
Average age = 30.4