A mixture of 70 liters of wine and water contains 10% water. How much water must be added to make water 12 ½% of the total mixture?  Pick:
A) 6 liters
B) 8 liters
C) 4 liters
D) 2 liters
E) 1 liters
70 * (10/100)= 
<gadget id="calculator">70 * (10/100)</gadget>
<output>7</output>
7   Wine Water   87 1/2% 12 1/2%   87 1/2% ------- 63   12 1/2% -------?=&gt; 9-7= 
<gadget id="calculator">9-7</gadget>
<output>2</output>
2   Answer: 2 liters
<result>D</result>
A mixture of 70 liters of wine and water contains 10% water. How much water must be added to make water 12 ½% of the total mixture?