state gov Jharkhand Police Constable Mock Test 2023 Quantitative Aptitude Ratio and Proportion Compound Ratios
In a magnalium alloy, the ratio of magnesium and aluminium in a 72 kg alloy is 5 ∶ 4. Some amount of magnesium is extracted from the alloy and the ratio becomes 7 ∶ 8, how much magnesium is extracted?
1
18 kg
2
16 kg
3
14 kg
4
12 kg