Question 1005304
This is the way it works using a similar example.  Use the same method:


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


x, how much of Delight
300-x, how much Drink


Amount of new Orange Drink, 300 gallons
Amount of orange juice, (0.50)(x)+(0.10)x
WANTED  0.40 Fraction As Orange Juice