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A highway is 432km long, and a passenger car can complete the whole journey in 4.5 hours; a freight car can complete the whole journey in 5.4 hours. How fast is the speed of the passenger car faster than that of the freight car?
432 △ 4.5-432 △ 5.4 = 96-80 = 16 (km / h) a: the speed of a bus is 16 km / h faster than that of a truck
A small car runs 2 / 3 km and uses 3 / 25 liters of gasoline. According to this calculation, how many kilometers can 15 liters of gasoline run at most?
Because the small car line uses 3 / 25 liters of gasoline for 3 / 2 km,
1 liter gasoline line: 3 / 2 △ 3 / 25 = 12.5 (km)
Maximum driving capacity of 15 liter gasoline: 12.5 × 15 = 187.5 (km)
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