Arithmeticmedium · Past Paper
The ratio of copper and zinc in an alloy is 5:3. If the weight of copper is 18.5 g, find the weight of zinc.
A11.1 g
B10.5 g
C12.3 g
D9.5 g
✓ Correct Answer: A — 11.1 g
5 units = 18.5, so 1 unit = 3.7. Zinc = 3 units = 3 * 3.7 = 11.1 g.
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