A chemist needs 10 liters of a 25% acid solution. The solution is to be mixed from three solutions whose concentrations are 10%, 20%, and 50%. How many liters should the chemist use to satisfy the following a) Use as little as possible of the 50% solution. 10 ntration

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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A chemist needs 10 liters of a 25%
acid solution. The solution is to be mixed from
three solutions whose concentrations are
10%, 20%, and 50%. How many liters should
the chemist use to satisfy the following
a) Use as little as possible of the 50% solution.
10% concentration solution in
liters
20% concentration solution in 25/3
liters
50% concentration solution in 5/3
liters
b) Use as much as possible of the 50%
solution.
10% concentration solution in
liters
20% concentration solution in
liters
50% concentration solution in
liters
c) Use 2 liters of the 50% solution.
10% concentration solution in 1
liters
20% concentration solution in 7
liters
50% concentration solution in
liters
Transcribed Image Text:A chemist needs 10 liters of a 25% acid solution. The solution is to be mixed from three solutions whose concentrations are 10%, 20%, and 50%. How many liters should the chemist use to satisfy the following a) Use as little as possible of the 50% solution. 10% concentration solution in liters 20% concentration solution in 25/3 liters 50% concentration solution in 5/3 liters b) Use as much as possible of the 50% solution. 10% concentration solution in liters 20% concentration solution in liters 50% concentration solution in liters c) Use 2 liters of the 50% solution. 10% concentration solution in 1 liters 20% concentration solution in 7 liters 50% concentration solution in liters
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