Question 1119243
This type of problem is very common.  Plenty of solution answers, examples, already exist and have been solved.

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<a href="https://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">LESSON: Solve both parts of two-part Mixture</a>
https://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev


<a href="https://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev">LESSON:  Solve both quantities of two-part mixture for price or cost</a>
https://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev


<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">EXAMPLE & LESSON: Using one variable to solve two-part mixture problem - video example</a>


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