How many liters of water must be evaporated from 50 liters of a 3 percent sugar solution to get a 4 percent sugar solution?  Choose the most appropriate option: A) 12.5 B) 15.5 C) 17.5 D) 21.5 E) 24.5
Let x be the amount that needs to be evaporated.   0.03(50) = 0.04(50-x)   0.04x = 2 - 1.5= 
<gadget id="calculator">2 - 1.5</gadget>
<output>0.5</output>
0.5/0.04= 
<gadget id="calculator">0.5/0.04</gadget>
<output>12.5</output>
12.5 liters   The answer is 12.5.
<result>A</result>
How many liters of water must be evaporated from 50 liters of a 3 percent sugar solution to get a 4 percent sugar solution?