Rodrick mixes a martini that has a volume of 'n' ounces having 40% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 50% Vermouth by volume. How many ounces of Gin must he add?	Choose the correct choice from the following choices:  A) n/6  B) n/3  C) 3n/5  D) 5n/6  E) 8n/5
4 ounces is vermouth   6 ounces of gin...   Total volume 10.   To make vermouth account for 50% of total volume the new volume must be....   x*0.5=4   x=8 ounces....   So now you see that he must add 2 ounces of gin...   Plug in 6 for n in the answer choices and look for answer 2   n/3
<result>B</result>
Rodrick mixes a martini that has a volume of 'n' ounces having 40% Vermouth and 60% Gin by volume. He wants to change it so that the martini is 50% Vermouth by volume. How many ounces of Gin must he add?