CBSE Class 11-science Answered
How many liters of water will have to be added to 1125 liters of the 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content?
Asked by Topperlearning User | 12 Sep, 2016, 10:05: PM
Expert Answer
Let us assume that l liters of water is added to 1125 liters so that the resulting mixture contain more than 25% but less than 30% acid solution.
Lets first calculate the acid content in 1125 liters (45% acid).
i.e., liters
Now when l liter of solution is added so the volume becomes (1125 + l) liter.
Now according to question the acid content should be more than 25% but less than 30% so
Now this can be written as two inequalities,
and
Multiplying by 100
Solving 2nd inequality
then
Hence the quantity of water added should be greater than 562.5 litre but less than 900.
Answered by | 13 Sep, 2016, 12:05: AM
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