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It takes about 15 hours for a train to leave Beijing and arrive in Guangzhou. After the train leaves, it will run at the original speed of 8 hours and then arrive in Wuhan. As the world's highest speed railway Wuhan Guangzhou high speed railway officially put into operation in December 2009, the average speed of the train from Wuhan to Guangzhou is more than 50 kilometers per hour, and the time required is also shortened by 4 hours Average speed from Beijing to Wuhan and average speed from Wuhan to Guangzhou after speed up
Let the average speed of the train from Beijing to Wuhan be x km / h, and the average speed from Wuhan to Guangzhou be y km / h after the speed increase. According to the meaning of the question, y = 2x + 5015x = 8x + (15 − 8 − 4) y solves the equations, and x = 150y = 350. A: the average speed of the train from Beijing to Wuhan is 150 km / h, and the average speed from Wuhan to Guangzhou is 350 km / h after the speed increase
It takes about 15 hours for a train to leave Beijing and arrive in Guangzhou. After the train leaves, it will run at the original speed of 8 hours and then arrive in Wuhan. As the world's highest speed railway Wuhan Guangzhou high speed railway officially put into operation in December 2009, the average speed of the train from Wuhan to Guangzhou is more than 50 kilometers per hour, and the time required is also shortened by 4 hours Average speed from Beijing to Wuhan and average speed from Wuhan to Guangzhou after speed up
Let the average speed of the train from Beijing to Wuhan be x km / h, and the average speed from Wuhan to Guangzhou be y km / h after the speed increase. According to the meaning of the question, y = 2x + 5015x = 8x + (15 − 8 − 4) y solves the equations, and x = 150y = 350. A: the average speed of the train from Beijing to Wuhan is 150 km / h, and the average speed from Wuhan to Guangzhou is 350 km / h after the speed increase
It takes about 15 hours for a train to leave Beijing and arrive in Guangzhou. After the train leaves, it will run at the original speed of 8 hours and then arrive in Wuhan. As the world's highest speed railway Wuhan Guangzhou high speed railway officially put into operation in December 2009, the average speed of the train from Wuhan to Guangzhou is more than 50 kilometers per hour, and the time required is also shortened by 4 hours Average speed from Beijing to Wuhan and average speed from Wuhan to Guangzhou after speed up
Let the average speed of the train from Beijing to Wuhan be x km / h, and the average speed from Wuhan to Guangzhou be y km / h after the speed increase. According to the meaning of the question, y = 2x + 5015x = 8x + (15 − 8 − 4) y solves the equations, and x = 150y = 350. A: the average speed of the train from Beijing to Wuhan is 150 km / h, and the average speed from Wuhan to Guangzhou is 350 km / h after the speed increase
The two trains run from two places 450 kilometers apart and meet each other in five hours. It is known that the speed ratio of the two trains is 4:5. How many kilometers do the two trains travel per hour?
Let B's velocity be x km / h, and the equation: (x + 45x) × 5 = 450 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 9x = 450 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 50, a's velocity is 50 × 45 = 40 (
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