Arithmetichard · Past Paper
In an alloy, there is 12% copper. To get 69 kg of copper, how much alloy is required?
A424 kg
B575 kg
C828 kg
D1732.5 kg
✓ Correct Answer: B — 575 kg
12% of x = 69 => x = 69 / 0.12 = 575 kg.
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