SOLUTION: I understand anytime there is any totals or we can build a relationship based on knowing a total of one coffee for example. But here is one that I can't figure out and it seems to

Question 880091: I understand anytime there is any totals or we can build a relationship based on knowing a total of one coffee for example. But here is one that I can't figure out and it seems to be missing something in order to solve it. The answer in the book is 19 2/7th of Kona beans.
Problem: The Create a blend of beans that is 30% Kona beans, the beanery adds pure Kona beans to a 45 lb sack of Columbian beans. How many pounds of Kona beans should be added tot he 45 lb of Columbian?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If you are going to make a mixture that contains only Kona and Colombian and it will have 30% Kona, then, in the end, the mixture must be 70% Colombian. So if you have 45 lbs of Colombian and

lbs of Kona, 45 pounds must be 70% of the sum. In other words:

Solve for

. Given careful arithmetic, you should reach the given answer.

John

My calculator said it, I believe it, that settles it

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