SOLUTION: How much decaffeinated coffee and 50% caffeine coffee should be mixed to produce 25 cups of 40%caffeine coffee?

SOLUTION: How much decaffeinated coffee and 50% caffeine coffee should be mixed to produce 25 cups of 40%caffeine coffee?

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Question 453872: How much decaffeinated coffee and 50% caffeine coffee should be mixed to produce 25 cups of 40%caffeine coffee?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
25x.40=10 cups caffeine
.50x=10
x=10/.50=20
You need 20 cups of 50% coffee and 5 cups caffeine-free coffee to make 25 cups of 40% caffeine coffee..
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