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The distance between a and B is 350 km. An express train and a local train depart from the two places at the same time and meet after 3.5 hours. It is known that the speed ratio of the express train and the local train is 3:2 What are the speeds of the two trains? To solve the equation by proportion method [urgent request]
Suppose that the fast train speed is x km / h and the slow train speed is 2 / 3x km / h
3.5（x+2/3x）=350
5/3x=100
x=60
Slow speed: 60 × 2 / 3 = 40 km / h
The distance between a and B is 96 km. The express and local trains run from each other at the same time. They meet in 4 / 5 hours. The speed ratio of the two trains is 0
Let the speed of express train be 3x and that of local train be 2x (4 / 5) * (3x + 2x) = 96. The solution is: x = 24. Thus: 3x = 72, 2x = 48. So the speed of fast train is 72km / h, and that of slow train is 48km / h
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