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Three containers have their volumes in the ratio 3 : 4 : 5. They are full of mixtures of milk and water. The mixtures contain milk and water in the ratio of (4 : 1), (3 : 1) and (5 : 2) respectively. The mixture of all these three containers are poured into a fourth container. The ratio of milk and water in the fourth container is = ?

Correct Answer: 157 : 53
Milk   :   Water  
4×28×3   :   1×28×3   = 5×28×3
3×35×4   :   1×35×4   = 4×35×4
5×20×5   :   2×20×5   = 7×20×5
1256   :   424  
157   :   53  

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