P4

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Long Winding Road Logistics (LWRL) is planning to purchase new vehicles to expand their regional delivery service. To better comply with environmental regulations, LWRL is considering electric trucks and stretch vans that use liquid natural gas as a cleaner fuel. Each truck can generate $1500 per day in revenue and each van can generate $800 per day in additional revenue. Electric trucks can be purchased for $100,000 each and LNG vans can,be purchased for $75,000 each. LWRL has a budget of $600,000 available to spend. At this time, the company also wants to limit the purchases to no more than 5 additional vehicles in total. How many of each vehicle should LWRL purchase to maximize revenue given the constraints mentioned above? Formulate this problem as a Total Integer model