.
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 56 grams of an alloy containing 18% copper
with 200 grams of an alloy containing 42% copper.
(a) How many grams of copper are in the resulting mixture?
(b) What percentage of the resulting mixture is copper?
~~~~~~~~~~~~~~~
(a) How many grams of copper are in the resulting mixture?
Exactly 0.18*56 + 0.42*200 grams of copper.
(b) What percentage of the resulting mixture is copper?
The percentage of copper in the resulting mixture/alloy is precisely
--------------
There is entire bunch of introductory lessons covering various types of mixture problems
- Mixture problems
- More Mixture problems
- Solving typical word problems on mixtures for solutions
- Word problems on mixtures for antifreeze solutions
- Word problems on mixtures for alloys (*)
- Typical word problems on mixtures from the archive
- Advanced mixture problems
- Advanced mixture problem for three alloys (*)
in this site.
You will find there ALL TYPICAL mixture problems with different methods of solutions,
explained at different levels of detalization, from very detailed to very short.
Read them and become an expert in solution mixture word problems.
In the list above, two lessons marked by (*) are devoted to alloys.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this textbook in the section "Word problems" under the topic "Mixture problems".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.