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Mathematics, 25.01.2021 18:20 kevinyanyp7egif

400 people are asked if they drink tea. 7/10 say "yes" and 20% of the people who say "yes" drink at least 3 cups each day.

a) Complete the frequency tree

b) What fraction of the 400 people drink at least 3 cups of tea each day?

(Give your answer in its simplest form!)

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