The 100-milliliter solution of sugar and water is 21% sugar. How much water (in milliliters) must be added to make a solution that is 12% sugar?
Choose the correct choice from the following:
A) 55
B) 60
C) 65
D) 70
E) 75
In the original solution the amount of sugar is 0.21*100= 
<gadget id="calculator">0.21*100</gadget>
<output>21</output>
21 ml.   Let the volume of the new solution be V.   0.12V=21 ml.   V=175 ml.   The amount of water we need to add is   175 - 100= 
<gadget id="calculator">  175 - 100</gadget>
<output>75</output>
75 ml.   The answer is 75.
<result>E</result>
The 100-milliliter solution of sugar and water is 21% sugar. How much water (in milliliters) must be added to make a solution that is 12% sugar?