Question 1044168
Give a variable to either unknown spice quantity.
x for the 25 dollars per kilograms spice
30-x for the 40 dollars per kilogram spice


{{{(25(x)+40(30-x))/30=35}}}


<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">two-part mixture using just one variable</a>


You could use two variables if you want.