SOLUTION: A solution of 64% fertilizer is to be mixed with a solution of 22% fertilizer to form 84 L of a 57% solution. How many liters of the 64% solution must be used? I have a lot of ques
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Question 885821: A solution of 64% fertilizer is to be mixed with a solution of 22% fertilizer to form 84 L of a 57% solution. How many liters of the 64% solution must be used? I have a lot of questions like this on my homework and if i could just have the answer to this one and see it all worked out i could do the rest! thanks!! Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of the 64% fertilizer needed
Let = liters of the 22% fertilizer needed
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(1)
(2)
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(2)
(2)
(2)
(2)
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Multiply both sides of (1) by
and subtract (2) from (1)
(1)
(2)
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and, since
(1)
(1)
(1)
70 liters of the 64% solution are needed
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check:
(2)
(2)
(2)
(2)
(2)
OK
