SOLUTION: A container is filled with 100 grams of bird feed that is 80% seed. How many grams of bird feed containing 5% seed must be added to get bird feed that is 40% seed?

Question 1025417: A container is filled with 100 grams of bird feed that is 80% seed. How many grams of bird feed containing 5% seed must be added to get bird feed that is 40% seed?
Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
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A container is filled with 100 grams of bird feed that is 80% seed. How many grams of bird feed containing 5% seed must be added to get bird feed that is 40% seed?
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"filled" mean "it is full".
Then you can not add anything.

If it is not filled, use the term "contains".

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