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The passenger car and the freight car drive in the opposite direction from the midpoint of a and B at the same time. When the passenger car reaches a, the freight car is 60 kilometers away from B When the bus arrives at the place a, the truck is 60 kilometers away from the place B. It is known that the speed ratio of the bus to the truck is 7:5. How many kilometers are there between the two places?
The speed ratio of passenger car to freight car is 7:5, that is to say, passenger car takes 7 parts, freight car takes 2 parts, and the difference is 2 parts
The bus has gone (half way): 60 △ 2 × 7 = 210 (km)
Whole course: 210 × 2 = 420 (km)
A: the distance between a and B is 420 kilometers
The two cars leave from the midpoint of city a and city B in the opposite direction at the same time. Three hours later, the bus arrives at city A. the truck is 60 kilometers away from city B. the speed ratio of passenger and freight cars is 3:2. What is the distance between city a and city B?
3 + 2 + 1 = 6, 60 △ 16 = 60 × 6, = 360 km; a: the distance between city a and city B is 360 km
The distance between city a and city B is 354.2 km. It takes 9.2 hours for motorcycles to drive from city a to city B. the speed of buses per hour is 1.5 times that of motorcycles. Buses travel more than one hour
Kilometers?
354.2 / 9.2 = 38.5km/h
38.5x1.5 = 57.75 km / h
The bus runs 57.75 kilometers per hour
A. B is 384km away from the two places. A and B start from the two places at the same time and meet each other 4 hours later. It is known that the speed ratio of a and B is 7; 5
Find the speed of a and B cars
If the velocity of a is 7x, then the velocity of B is 5x
7x by 4 + 5x by 4 = 384
28x+20x=384
48x=384
x=8
Substituting x = 8 into 7x and 5x
7 × 8 = 56 km / h
5 × 8 = 40 km / h
A: the speed of a is 56 km / h, and that of B is 40 km / h
RELATED INFORMATIONS
- 1. A. B is 384km away from each other. Car a and B start from the same place at the same time, and run in opposite directions for 4 hours. The speed of car a and B is known A. B is 384 kilometers away from each other. A and B start from the same place at the same time and meet each other for 4 hours. It is known that the speed ratio of car a and car B is 7:5. How can car a and car B travel thousands of meters per hour?
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