Question 1002267
{{{100*amountBasil/mixture=percentBasil}}}


z is how many ounces of 100% basil to add.
16-z is how much of the 20% basil blend to add.
{{{highlight((100z+(16-z)*20)/16=30)}}}


Solve for z.


Another example of the same type,
<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">two part mixture, just one variable - example</a>