SOLUTION: A jeweler has five rings, each weighing 18 g, made of an alloy of 10% silver adn 90% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 75
Algebra.Com
Question 23844: A jeweler has five rings, each weighing 18 g, made of an alloy of 10% silver adn 90% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 75%. How much silver should he add?
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
10(18)+90(18)=75(x+18)
180+1620=75x+1350
1800=75x+1350
75x=450
x=6
Hence he should add 6g of silver.
Paul.
RELATED QUESTIONS
A jeweler has five rings, each weighing 18 grams made of an alloy of 10% silver and 90%... (answered by ankor@dixie-net.com)
A jeweler has five rings, each weighing 18grams, made of an alloy of 10% silver and 90%... (answered by Boreal)
A jeweler has five rings, each weighing 18grams, made of an alloy of 10% silver and 90%... (answered by ankor@dixie-net.com)
A jeweler has five rings, each weighing 16 grams, made of an alloy of 10% silver and 90%... (answered by jim_thompson5910)
Varun has five rings, each weighing 18 g, made of an alloy of 10% silver and 90% gold. He (answered by richwmiller)
A jeweler has five rings, each weighing 18g, made of an alloy of 10 percent silver and 90 (answered by richwmiller)
Mixture Problem: A jeweler has five rings, each weighing 18g, made of an alloy of 10%... (answered by ankor@dixie-net.com)
A jeweler has six rings, each weighing 8 grams, made of an alloy of 10% silver and 90%... (answered by josgarithmetic)
A jeweler has 5 rings, each weighing 18 grams, made of an alloy of 18% silver and 90%... (answered by stanbon)