How many liters of water must be evaporated from 50 liters of a 2 percent sugar solution to get a 5 percent sugar solution?
Choose the correct choice
A) 20  B) 25  C) 30  D) 32  E) 35
Let x be the amount that needs to be evaporated.   0.02(50) = 0.05(50-x)   0.05x = 2.5 - 1= 
<gadget id="calculator">2.5 - 1</gadget>
<output>1.5</output>
1.5/0.05= 
<gadget id="calculator">1.5/0.05</gadget>
<output>30</output>
30 liters   The answer is 30.
<result>C</result>
How many liters of water must be evaporated from 50 liters of a 2 percent sugar solution to get a 5 percent sugar solution?