Task: Question Answering
Input (English): Problem: a man buys 100 lts of liquid which contains 25 % of the liquid and the rest is water . he then mixes it with 90 lts of another mixture with 30 % of liquid . what is the % of water in the new mixture ? 
Options: a ) 81 , b ) 75 , c ) 72.63 , d ) 73 , e ) 76
Output (English): c