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At a dinner party, Comal and Derek were each given a similar bottle of juice, comal drank 2/5 of his bottle of juice before dinner. After dinner, Derek drank 1/2 of bottle of juice and Comal drank another 3/10 of his bottle of juice.

a)  What fraction of his bottle of juice did Comal drink altogether?

b)  What fraction of the bottle of juice did Comal drink more than Derek? Express your answer in simplest form.

 Sep 18, 2021
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a) 2/5 + 3/10 = 4/10 + 3/10 = 7/10

b) Derek drank 1/2 of his juice.

1/2 = 5/10

7/10 - 5/10 = 2/10 = 1/5

 Sep 18, 2021

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