A bad habit milkman to sell his milk at cost price but he mixes it with water and thereby gains 25%. Find the percentage of mixture water ?
Options: A) 20 B) 30 C) 35 D) 40 E) 45
cp of 1 lr = 1 rs   mix = (100/125*1) = 4/5   ratio of milk to water = 4/5:1/5 = 4:1   =&gt;percentage of mix = (1/5*100)= 
<gadget id="calculator">(1/5*100)</gadget>
<output>20</output>
20   20NSWER 20
<result>A</result>
A bad habit milkman to sell his milk at cost price but he mixes it with water and thereby gains 25%. Find the percentage of mixture water ?