railway DMRC CRA Mock Test Series Quantitative Aptitude Mixture Problems To Make a Mixture from Two or More Things
A can contains a mixture of two liquids A and B in proportion 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the proportion of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?
1
20
2
21
3
30
4
27