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The speed of a car is 47 times that of a train. Two cars are running from two places at the same time, and they meet at a distance of 15 kilometers from the midpoint. How many kilometers does the train travel?
The distance of the whole journey: 15 △ 74 + 7-12, = 15 △ 322, = 110 (km), the distance of the train: 110 × 711 = 70 (km). A: at this time, the train runs 70 km
The speed of the car is 4 / 7 of the speed of the train. The two cars are running opposite each other from two places. They meet 15 meters away from the terminal. How many kilometers did the train travel?
Meet 15 kilometers away from the midpoint. When you meet, the train runs 15 + 15 = 30 kilometers more than the car. So when you meet, the train runs 30 (1-4 / 7) = 70 kilometers. Have a good time
A and B travel 360 kilometers apart from each other at the same time. They meet 7.2 hours later. A's speed is three times that of B's. how many kilometers does B travel per hour?
360 △ 7.2 △ 3 + 1, = 50 △ 4, = 12.5 km; a: B travels 12.5 km per hour
The speed ratio of a and B is 10:7. How many kilometers do they walk when they meet?
There should be a formula
The speed ratio of a and B is 10:7
When they met, the distance ratio was 10:7
All right
225 △ (10 + 7) × 10 = 2250 / 17 km
B OK
225 △ (10 + 7) × 7 = 1575 / 17 km
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