How many liters of water must be evaporated from 50 liters of a 4 percent sugar solution to get a 5 percent sugar solution?  Choose the correct choice from the following.
A) 4
B) 6
C) 8
D) 10
E) 12
Let x be the amount that needs to be evaporated.   0.04(50) = 0.05(50-x)   0.05x = 2.5 - 2= 
<gadget id="calculator">2.5 - 2</gadget>
<output>0.5</output>
0.5/0.05= 
<gadget id="calculator">0.5/0.05</gadget>
<output>10</output>
10 liters   The answer is 10.
<result>D</result>
How many liters of water must be evaporated from 50 liters of a 4 percent sugar solution to get a 5 percent sugar solution?