A solution is made of water and pure acid. If 75% of the solution is water, how many litters of pure acid are in 20 litters of this solution?	Choose the correct choice from the following answers:
A) 10 B) 35 C) 27 D) 5 E) 13
If 75% of the solution is water then   100% - 75% = 25% is acid.   If the solution is 20 litters, then   25% of 20  100  - 75= 
<gadget id="calculator"> 100  - 75</gadget>
<output>25</output>
25% is acid.   If the solution is 20 litters, then   25% of 20= 25% * 20 = 5 litters are pure acid.   correct answer 5
<result>D</result>
A solution is made of water and pure acid. If 75% of the solution is water, how many litters of pure acid are in 20 litters of this solution?