Mathematics, 21.07.2019 02:50 bakaoffire

Ajeweler has five rings, each weighing 18 grams, made of an alloy of 10% silver and 90% gold. he decides to melt down the rings and add enough silver to reduce the gold content to 45 %. how much silver should he add?

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Ajeweler has five rings, each weighing 18 grams, made of an alloy of 10% silver and 90% gold. he dec...