Teaching EMRS JSA (Junior Secretariat Assistant) Mock Test Series 2023 Quantitative Aptitude Ratio and Proportion Simple Ratios
Gold is 19 times heavier than water and copper is 9 times heavier than water. In which ratio gold and copper should be mixed so that mixed metal (alloy ) is 15 times heavier than water ?
1
19 ∶ 9
2
9 ∶ 19
3
2 ∶ 3
4
3 ∶ 2