Arithmeticeasy · Past Paper
The ratio of zinc and copper in brass is 13:7. How much zinc is there in 100 kg of brass?
A65 kg
B35 kg
C70 kg
D13 kg
✓ Correct Answer: A — 65 kg
Total parts = 13 + 7 = 20. Zinc = (13/20) * 100 = 65 kg.
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