A mixture of 40 liters of milk and water contains 10% water. how much water should be added to this so that water may be 20% in the new mixture?	Choose the correct choice from the following choices.
A) 3 B) 4 C) 5 D) 6 E) 7
4 ltr - Water   36 ltr - milk   Let X water be added then the new mixture must have 20% water   Then   4 + X = 20/100 (40+X)   X=5   ANSWER:5
<result>C</result>
A mixture of 40 liters of milk and water contains 10% water. how much water should be added to this so that water may be 20% in the new mixture?