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It takes 6 hours for the express train from a to B, and 10 hours for the slow train. Now the two trains leave from a and B at the same time. When they meet, the express trains travel 240 kilometers more. How many kilometers are there between a and B?
The meeting time is: 1 △ 16 + 110, = 1 △ 415, = 154 (hours); the distance between a and B is: 240 △ 154 △ 16-110, = 240 × 415 × 15, = 960 (km); a: the distance between a and B is 960 km
The fast train and the slow train leave from a and B at the same time and meet each other in 5 hours. After meeting, the fast train will drive 4 hours to B. It is known that the fast train travels 20 times more per hour than the slow train
If the slow train runs x per hour, the fast train runs x + 20 per hour,
When we meet in 5 hours, the fast train will walk 5 * (x + 20); the slow train will walk 5x;
Because after the meeting, the express train will drive another 4 hours to reach B, so the distance for the express train to drive another 4 hours to reach B is equal to the distance for the slow train and the express train before they meet 5 hours, that is: 4 * (x + 20) = 5x, the solution x = 80
Then the express train runs 100 per hour, and the distance between Party A and Party B is 5 * 100 + 5 * 80 = 900
It takes 5 hours for an express train to go from place a to place B, and 7 hours for a slow train to go from place B to place A. now the two trains leave from station a and station B at the same time. It is known that the express train travels 24km more per hour than the slow train. How many kilometers is the whole journey?
According to the analysis, 24 △ 15 − 17, = 24 △ 235, = 420 km; a: the whole journey is 420 km
The local train goes from place a to place B in 8 hours, and the express train goes from place B to place a in 80 kilometers per hour. The two trains leave at the same time
Three hours later, it's 60 kilometers away. What's the distance between a and B?
（80×3+60）÷（1-1/8×3）
=300÷5/8
=480km
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