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A and B start from ab at the same time. A runs 60 kilometers per hour and B 52 kilometers per hour. The two vehicles meet at 32 kilometers from the midpoint to find the distance between AB and ab
Time = 32 × 2 ÷ (60-52) = 8 hours
Distance = 8 × (60 + 52) = 896km
A and B drive from a to B at the same time. When a completes one third of the whole journey, B is 60 kilometers away from B. continue to drive at this speed. When a arrives at B, B completes six seventh of the whole journey. How many kilometers are there between a and B?
When car a arrives at place B, car B completes six seventh of the whole journey, so the speed ratio of car a to car B is 7:6
Therefore, when car a completes one third of the whole journey, car B takes 6 / 7 * 1 / 3 = 2 / 7, and 1-2 / 7 = 5 / 7 of the whole journey,
So the distance between AB and ab is 60 / (5 / 7) = 84 km
A and B drive from a to B respectively. When car a completes one third of the whole journey, car B is 60 kilometers away from B
Because starting at the same time is the same time, then their distance ratio is fixed, 4:5 is equal to one third of X; X = 4 / 15; 4 / 15 of the whole journey of B line, 11 / 15; 330 divided by 11 / 15, x equals 450 km
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Car a and car B start from a and B at the same time and travel in opposite directions. Car a travels 80 kilometers per hour and car B 70 kilometers per hour. When car a reaches 25 o'clock of the whole journey, car B is 36 kilometers away from the midpoint. How many kilometers is the distance between a and B?
Let the distance between a and B be x km. & nbsp; & nbsp; 25X △ 80 = (12x-36) △ 70 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X200 = X140 − 3670x140 − X200 = 1835 & nbsp; & nbsp; & nbsp; & nbsp; 3x1400 × 35 = 1400 × 18105x △ 105 = 25200 △ 105 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 240 A: the distance between a and B is 240 km
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