Question 1146448
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blending a H% active ingredient solution and a L% active ingredient solution.
How many milliliters of each are used to make a M  milliliter solution that is T% active ingredient?
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v of H%
M-v of L%


{{{Hv+L(M-v)=TM}}}
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{{{Hv+LM-Lv=TM}}}
{{{Hv-Lv+LM=TM}}}
{{{Hv-Lv=TM-LM}}}

{{{v(H-L)=M(T-L)}}}

{{{highlight(v=M((T-L)/(H-L)))}}}
Substitute your given values,....