How many liters of water must be evaporated from 50 liters of a 3-percent sugar solution to get a 2-percent solution?  Answers
A) 35  B) 33 1/3  C) 27  D) 16 2/3  E) 18
How many liters of water must be evaporated from 50 liters of a 3-percent sugar solution to get a 2-percent solution?   3% of a 50 liter solution is 1.5L. So you are trying to determine how many liters must a solution be for the 1.5L to represent 2% of the solution. Set up an inequality and solve for x:   1.5/x = 1/2   x = 3   Since you need a 15L solution, you must evaporate 18 of the original 50L solution to get a 2% solution.   Answer is 18.
<result>E</result>
How many liters of water must be evaporated from 50 liters of a 3-percent sugar solution to get a 2-percent solution?