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Andy said that 4/9 of his collection is action or comedy Cynthia said that Andy made an error explaine whether Andy is correct or incorrect and why

3/5 of the dvds are action and 1/4 of the dvds are comedy

Pls I need it done by midnight

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From the information given, we can calculate that 7/10 of Andy's collection is either action or comedy. This means that Andy is incorrect, because he said that only 4/9 of his collection is action or comedy.

To see why Andy's estimate is too low, consider that 3/5 of the DVDs are action, which is greater than 4/9. Additionally, 1/4 of the DVDs are comedy, which is also greater than 4/9. Since some DVDs are both action and comedy, the total fraction of the collection that is either action or comedy is greater than 4/9.

Therefore, Cynthia is correct that Andy made an error in his estimate.
User Benoit Bertholon
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