Refer to Problem 75. The cost of leasing an 8,000-gallon tank car is $450 per month, a 16,000-gallon tank car is $650 per month, and a 24,000-gallon tank car is $1,150 per month. Which of the solutions to Problem 75 would minimize the monthly leasing cost?

Data from Problem 75

A chemical manufacturer wants to lease a fleet of 24 railroad tank cars with a combined carrying capacity of 520,000 gallons. Tank cars with three different carrying capacities are available: 8,000 gallons, 16,000 gallons, and 24,000 gallons. How many of each type of tank car should be leased?