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The speed ratio of car a and car B is 3:4. They leave from AB and meet at 24 km from the midpoint. When car B arrives at a, how many kilometers is car a away from B?
If the speed ratio of a and B is 3:4, the distance ratio when they meet is 3:4
They left AB and met 24 km away from the midpoint. At this time, B was 24 * 2 = 48 km more than a
3+4=7
The whole journey is 48 (3 / 4-3 / 7) = 336 km
When B finished the whole journey, a finished 3 / 4 of the whole journey
Therefore, car a is 336 * (1-3 / 4) = 84km away from ground B
A and B start from ab at the same time. The speed ratio of a and B is 5:3. They meet at 24km away from the midpoint and ask the distance between AB and B
96
The speed ratio of a and B is 5:8. The two vehicles start from ab at the same time and meet at the place 24 kilometers away from the midpoint. How many kilometers are there between a and B?
When we met, car B had more lines than the express
24 × 2 = 48 (km)
The first car is in total
48 △ (8-5) × 5 = 80 (km)
The second car is running:
48 △ (8-5) × 8 = 128 (km)
Distance between the two places:
80 + 128 = 208 (km)
A and B leave from a and B at the same time. The speed ratio of a and B is 5:4. After the two vehicles meet, the speed of a remains the same. B travels 18 kilometers more per hour than before. As a result, the two vehicles arrive at each other's starting place at the same time. How many kilometers does a travel per hour?
5 ／ 4 = 1.25, 18 ／ (1.25 × 1.25-1) × 1.25, = 18 ／ (1.5625-1) × 1.25, = 18 ／ 0.5625 × 1.25, = 32 × 1.25, = 40 km; a: car a travels 40 km per hour
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