A person drives a large diesel-fueled truck from Riyadh to Jeddah at an average speed of...

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A person drives a large diesel-fueled truck from Riyadh to Jeddah at an average speed of 110 km/h. The distance he traveled is 990 km. During this trip, the power consumption is given by the following equation: P= Pacc + Ptire + Paero Where, Pacc 20 (kW) Ptire = Ctire x V, where Ctire = 0.03 [Vis in km/h, and the result is in kW] Pacro Caerox V³, where Caero = 0.0003 [V is in km/h, and the result is in kW] To reduce diesel consumption on his way back from Jeddah to Riyadh, the driver decides to do the following: Properly inflate the tires to reduce Ctire by 20% Install aerodynamic additives to reduce Caero by 15% Drive at 90 km/h The power consumed by the accessories (Pacc) remains the same during the return trip. The efficiency of the diesel engine is 30% (defined as: power output / rate of heat input from diesel), and the price of diesel is SR 0.75/liter. The heating value of a liter of diesel is 36 MJ. L a. How many liters of diesel does the driver consume on the first trip (from Riyadh to Jeddah)? [5 points] b. How many liters of diesel does the driver consume on the second trip (from Jeddah to Riyadh)? [6 points] c. Calculate the savings (in Saudi Riyals) the driver made in fuel cost in the second trip. [5 points] A person drives a large diesel-fueled truck from Riyadh to Jeddah at an average speed of 110 km/h. The distance he traveled is 990 km. During this trip, the power consumption is given by the following equation: P= Pacc + Ptire + Paero Where, Pacc 20 (kW) Ptire = Ctire x V, where Ctire = 0.03 [Vis in km/h, and the result is in kW] Pacro Caerox V³, where Caero = 0.0003 [V is in km/h, and the result is in kW] To reduce diesel consumption on his way back from Jeddah to Riyadh, the driver decides to do the following: Properly inflate the tires to reduce Ctire by 20% Install aerodynamic additives to reduce Caero by 15% Drive at 90 km/h The power consumed by the accessories (Pacc) remains the same during the return trip. The efficiency of the diesel engine is 30% (defined as: power output / rate of heat input from diesel), and the price of diesel is SR 0.75/liter. The heating value of a liter of diesel is 36 MJ. L a. How many liters of diesel does the driver consume on the first trip (from Riyadh to Jeddah)? [5 points] b. How many liters of diesel does the driver consume on the second trip (from Jeddah to Riyadh)? [6 points] c. Calculate the savings (in Saudi Riyals) the driver made in fuel cost in the second trip. [5 points]

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