There are two containers A and B in which a mixture of petrol and kerosene is filled in the ratios 1 : 6 and 5 : 2 respectively. A mixture of both liquids is mixed to obtain a mixture of 1560 liters, containing 480 liters of petrol. Find the ratio of the amount of mixture in vessel A to amount of mixture in vessel B.
1. 45 : 111
2. 111 : 45
3. 111 : 47
4. 47 : 111