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The speed ratio of the local train to the express train is 3:4. The two trains run from a to B at the same time, and meet at 8 km from the midpoint?
When the fast train and the local train meet, they travel the same time, so the ratio of their distance is equal to the ratio of their speed,
That is to say, when the fast train and the local train meet, their distance ratio is also 3:4,
So a drove 3 / 7 of the whole journey, B drove 4 / 7 of the whole journey
So, their journey to the midpoint accounts for 4 / 7-1 / 2 = 1 / 14 of the whole journey
Therefore, the distance between a and B is 8 / 1 / 14 = 112 (km)
The fast and slow trains run from a and B at the same time and meet at a distance of 4km from the midpoint. The speed of the slow train is 5 / 6 of that of the fast train. How many kilometers are there between the two places?
The distance between the two places is 48 + 40 = 88 km
It is known that the fast train travels 65 kilometers per hour and the slow train 25 kilometers per hour. What is the whole journey of the slow train?
Hello
4X (65 + 25) = 360 km
360 △ 25 = 14.4 hours
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