Teaching NVS Junior Secretariat Assistant (JSA) Mock Test 2024 Quantitative Aptitude Mixture Problems
A vessel contains 40 L of oxygen. 10 L of oxygen is replaced by Nitrogen. This process is further repeated once more time. Find the ratio between oxygen to Nitrogen in the vessel.
1
7 : 9
2
7 : 7
3
9 : 2
4
9 : 7