Rodrick mixes a martini that has a volume of 'n' ounces having 37% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 25% Vermouth by volume. How many ounces of Gin must he add?	Pick:
A) n/6
B) n/2
C) 3n/5
D) 5n/6
E) 8n/5
total V G   1 ounce 0.37 0.6   n ounce 0.37n 0.6n -------------initial expression   lets say g ounces of gin is added to this mixture   n+g 0.37n 0.6n+g --------------final expression   given that after adding g ounces of gin , V should become 25% of the total volume.   =&gt;Volume of V/total volume = 25/100   =&gt; 0.37n /n+g = 1/4   =&gt; 1.48n = n+g   =&gt; g = n/2   Answer is B.   Note that after we add pure Gin, the volume of Vermouth will remain the same. n/2ased on this set the equation:   0.37n=0.25(n+g) --&gt; g=n/2   Answer: n/2.
<result>B</result>
Rodrick mixes a martini that has a volume of 'n' ounces having 37% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 25% Vermouth by volume. How many ounces of Gin must he add?