SOLUTION: Help me please!
Gabe Amodeo, a nuclear physicist needs 30 liters of a 40% acid solution. He currently has a 30% solution, and a 60% solution. How many liters of each does he ne
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Gabe Amodeo, a nuclear physicist needs 30 liters of a 40% acid solution. He currently has a 30% solution, and a 60% solution. How many liters of each does he ne
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Question 770408: Help me please!
Gabe Amodeo, a nuclear physicist needs 30 liters of a 40% acid solution. He currently has a 30% solution, and a 60% solution. How many liters of each does he need to make the needed 30 liters of 40% acid solution?
Gabe needs __ liters of the 30% solution.
He also needs ___ liters of the 60% solution. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of 30% solution needed
Let = liters of 60% solution needed = liters of acid in 30% solution = liters of acid in 60% solution
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(1)
(2)
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(2)
(2)
(2)
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Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
and, since
(1)
(1)
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Gabe needs 20 liters of the 30% solution.
He also needs 10 liters of the 60% solution.
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check:
(2)
(2)
(2)
(2)
(2)
(2)
OK
