MCQOPTIONS
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				| 1. | 
                                    Q: Milk and water are in 7:2 ratio in a mixture of 729 litres. How much water shall be mixed in it in order to change this ratio to 7:3? | 
                            
| A. | 81 | 
| B. | 72 | 
| C. | 45 | 
| D. | 56 | 
| Answer» B. 72 | |