other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Mixture Problems
A mixture contains milk and water in the ratio of 9 : 4. on adding 4L of water; the ratio of milk and water becomes 3 : 2 then find the quantity of water in the original mixture.
1
7 L
2
8 L
3
9 L
4
None of these