A chemist wants to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4 percent acid solution. How many liters of each solution should the chemist use?

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A chemist wants to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4 percent acid solution. How many liters of each solution should the chemist use?

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Answer 1 · 2017-05-30T06:33:34

$1.8$ liters of $9%$ solution and $1.2$ liters of $4%$ solution

Explanation:

In mixture problems combining two solutions write their strengths, draw a cross through a desired concentrate in the centre and find out the differences. In the above case it is as shown below.
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The ratio of differences is $3:2$ and hence two concentrates should be mixed in this ratio.

Hence we should have $3xx3/5=9/5=1.8$ liters of $9%$ solution

and $2xx3/5=6/5=1.2$ liters of $4%$ solution

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A chemist wants to make 3 liters of a 7% acid solution by mixing a 9% acid solution and a 4 percent acid solution. How many liters of each solution should the chemist use?

1 Answer

Explanation:

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