The ratio of pure gold in 18 carat gold is _______________?
Correct answer: D. 0.75
- A. 0.5
- B. 0.9
- C. 0.8.5
- D. 0.75
Explanation
The carat value gives parts of pure gold out of 24, so 18-carat gold contains 18/24, or 0.75, pure gold. The remaining 25% consists of other metals added to increase hardness.
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