How do I set this problem up and do it?

Question

Blending Granola. Deep Thought Granola is 25% nuts and dried fruit. Oat Dream Granola is 10% nuts and dried fruit. How much of Deep Thought and how much Oat Dream should be mixed to form a 20 pound batch of granola that is 19% nuts and dried fruit?

Answer 1

DT lbs of deep thought granola
OD lbs of oat dream granola

DT*.25+OT*.10= 20*.19 Nut equations
DT+ OT=20 bulk weight equation

Those two allow you to solve.

This is the first time I have ever seen Barks, Twigs, and Leaves cereal in algebra.