Question

Dr. Weinstein took 50 ounces of a 20% silver

alloy and mixed it with a 40% silver alloy to get
a 30% silver alloy. How many ounces of the 40%
silver alloy did he use?

Answer 1

I think it is 100

Answer 2

Explanation:

The answer is 50 ounces

Because 30% silver is right in between 20% silver and 40% silver, it would have to be the same amount to be 30%