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Party A and Party B ride from both places at the same time. Party A travels 20 kilometers per hour, and Party B travels 18 kilometers per hour. When they meet, the distance between them is 3 kilometers from the midpoint of the whole journey. How long is the whole journey? (draw a picture first, then answer)
3 × 2 (20-18) = 6 △ 2 = 3 (hours); (20 + 18) × 3 = 38 × 3 = 114 (kilometers); answer: the whole journey is 114 kilometers long
The speed of a is 56 times that of B, and a travels 800 meters per minute. Find the distance between a and B
A: the distance between a and B is 7040 meters
The speed of car a is equal to 5 / 7 of the speed of car B. the two cars are facing each other at the same time. They meet 8 kilometers away from the midpoint of the two places. How many kilometers are there between the two places?
Because the two cars meet at the same time, the distance is proportional to the speed
So the distance ratio of the two cars is also 7:5
Therefore, the total distance is 8 × 2 ^ (7-5) / (7 + 5) = 16 ^ 1 / 6 = 96 (km)
When they meet, the distance ratio of a and B is 5:3. If a completes the whole journey, it will take 2 hours
So it takes () hours for line B to complete the whole journey?
The distance ratio of a and B is 5:3,
The time ratio of Party A and Party B is 3:5
It takes 2 △ 3 × 5 = 10 / 3 hours = 3 and 1 / 3 hours for B to complete the whole journey
Please take the answer and support me
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