SOLUTION: A jeweler has 3 rings, each weighing 18 g, made of an alloy of 7% silver and 93% gold. She decides to melt down the rings and add enough silver to reduce the gold content to 81%. H

Question 839179: A jeweler has 3 rings, each weighing 18 g, made of an alloy of 7% silver and 93% gold. She decides to melt down the rings and add enough silver to reduce the gold content to 81%. How much silver should she add?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The 3 rings weigh g
The weight of the silver is g
The weight of the gold is g
Let = grams of silver to be added
to reduce the gold content to 81%.
----------------------------------------
If the gold content is to be 81%, the silver content
will be %

-----------------
8 g of silver must be added
check:

OK
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