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Problem 8-29 (Algorithmic)

La Jolla Beverage Products is considering producing a wine cooler that would be a blend of a white wine, a rose wine, and fruit juice. To meet taste specifications, the wine cooler must consist of at least 45% white wine, at least 25% and no more than 35% rose, and exactly 25% fruit juice. La Jolla purchases the wine from local wineries and the fruit juice from a processing plant in San Francisco. For the current production period, 10000 gallons of white wine and 6500 gallons of rose wine can be purchased; an unlimited amount of fruit juice can be ordered. The costs for the wine are $1 per gallon for the white and $1.5 per gallon for the rose; the fruit juice can be purchased for $0.5 per gallon. La Jolla Beverage Products can sell all of the wine cooler it can produce for $2.5 per gallon.

1. Is the cost of the wine and fruit juice a sunk cost or a relevant cost in this situation?

Sunk cost/ Relevant cost

Formulate a linear program to determine the blend of the three ingredients that will maximize the total profit contribution. Solve the linear program to determine the number of gallons of each ingredient La Jolla should purchase and the total profit contribution it will realize from this blend. If required, round your answers to one decimal place. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank.

	Let W = gallons of white wine
	Let R = gallons of rose wine
	Let F = gallons of fruit wine

Max	___________________W	+	___________________R	+	____________________F
s.t.
	___________________W	+	___________________R	+	____________________F		__________________	% white
	___________________W	+	___________________R	+	____________________F		__________________	% rose minimum
	___________________W	+	___________________R	+	____________________F		__________________	% rose maximum
	___________________W	+	___________________R	+	____________________F	=	__________________	% fruit juice
	___________________W						__________________	Available white
			___________________R				__________________	Available rose
W, R, F 0

Optimal Solution:
W	__________________
R	__________________
F	__________________

Profit Contribution = __________________

c. If La Jolla could obtain additional amounts of the white wine, should it do so? Yes / No

If so, how much should it be willing to pay for each additional gallon, and how many additional gallons would it want to purchase?

d. If La Jolla Beverage Products could obtain additional amounts of the ros wine, should it do so? Yes / No If so, how much should it be willing to pay for each additional gallon, and how many additional gallons would it want to purchase?

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