The bartender of your local pub has asked you to assist him in finding the combination of mixed drinks that will maximize his revenue. He has the following bottles available:

1 quart (32 oz.) Old Cambridge (a fine whiskey—cost $8/quart)

1 quart Joy Juice (another fine whiskey—cost $10/quart)

1 quart Ma’s Wicked Vermouth ($10/quart)

2 quarts Gil-boy’s Gin ($6/quart)

Since he is new to the business, his knowledge is limited to the following drinks: Whiskey Sour 2 oz. whiskey Price $1 Manhattan 2 oz. whiskey $2 1 oz. vermouth Martini 2 oz. gin $2 1 oz. vermouth Pub Special 2 oz. gin $3 2 oz. whiskey