<PRE><B>Question 1205699</B>
&lt;br&gt;
Certainly the wording of the problem is poor....&lt;br&gt;
My interpretation is that in the final mixture the amount of water is 85.71% of the amount of lemon juice, and the amount of water is 6ml less than the amount of lemon juice.&lt;br&gt;
In that case, most of the information in the problem is not relevant.&lt;br&gt;
Almost certainly the 85.71% is a decimal approximation of the fraction 6/7. That means the final solution is 6 parts water and 7 parts lemon juice.&lt;br&gt;
6x = amount of water
7x = amount of lemon juice&lt;br&gt;
Those amounts differ by 6ml:&lt;br&gt;
7x-6x = 6
x = 6&lt;br&gt;
The total amount in the second solution is 6x+7x = 13x = 13*6 = 78ml&lt;br&gt;
ANSWER: 78 ml&lt;br&gt;
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