SOLUTION: Joan has one solution that is 18% acid and a second solution that is 43% acid. How many liters of each should she mix together in order to get an 80-L solution that is 26.5% acid?

Question 1121903: Joan has one solution that is 18% acid and a second solution that is 43% acid. How many liters of each should she mix together in order to get an 80-L solution that is 26.5% acid?
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A certain metal is 45% tin. How many kilograms of this metal should be mixed with 60% of 75kg tin to produce a 54% metal?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52814) (Show Source): You can put this solution on YOUR website!
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ONE and ONLY ONE problem per post.

It is the RULE of this forum.

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comment from student: Hello. I only realized now that it states that you must only have 1 question per post. I'm sorry for violating the rules.
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My response : Glad to hear it . . .

Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
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Joan has one solution that is 18% acid and a second solution that is 43% acid. How many liters of each should she mix together in order to get an 80-L solution that is 26.5% acid?
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A certain metal is 45% tin. How many kilograms of this metal should be mixed with 60% of 75kg tin to produce a 54% metal?
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The tin example problem:

x, kilograms of the 45% tin metal

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