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It is known that it takes 6 hours for passenger cars and 8 hours for freight cars to start from 490 kilometers apart at the same time?
What is the speed ratio of passenger cars to freight cars
1÷6：1÷8＝4：3
The distance ratio when meeting is 4:3
When we met, the bus went
490 × (4 + 3) / 4 = 280 (km)
In mathematics, a freight car and a passenger car run from two places 135 km apart at the same time and meet each other in 1.5 hours
A freight car and a passenger car are traveling from two places 135 kilometers apart at the same time. After 1.5 hours, they meet. Given that the speed ratio of the passenger car to the freight car is 8:7, how many kilometers are the freight cars traveling per hour
It is set that passenger cars run 8 km per hour and freight cars run 7 km per hour
(8x + 7x) * 1.5 = 135, the solution is x = 6, then 7x = 42
The existing trucks run 42 kilometers per hour
The distance between the two cities is 564 km. Two trains leave the two cities at the same time and meet each other in 6 hours. It is known that the speed of the first train is 2 km faster than that of the second train per hour. What are the speeds of the two trains?
(564-6 × 2) △ 6 / 2, = (564-12) △ 6 / 2, = 552 / 6 / 2, = 46 (km / h); 46 + 2 = 48 (km / h). A: the speed of the first train is 48 km / h, and that of the second train is 46 km / h
The distance between a and B is 595km. A passenger train and a freight train leave from a and B at the same time and meet each other in 3 or 5 hours
The speed ratio of passenger cars to freight cars is 9; 8. How many kilometers do passenger cars and freight cars travel per hour?
Bus 595 △ 3.5 × 9 / (9 + 8)
=170×9/17
=90 km / h
Freight car 595 △ 3.5 × 8 / (9 + 80)
=170×8/17
=80 km / h
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