You have two small sculptures made of copper and gold. The first sculpture has 5% gold while the second one has 10% gold. The first sculpture has twice the mass of the second one. You melt both, extract the gold and you make a ring of pure gold that is 10 g. What is the mass of the lighter sculpture?
a. 40g
b. 50g
c. 80g
d. 100g
e. 150g
Answers: 2
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You have two small sculptures made of copper and gold. The first sculpture has 5% gold while the sec...
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