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A starts 15 minutes earlier than B. A travels 20 kilometers more than B. when a meets B, a walks 55 kilometers more than B Car B is two hours away
15 minutes = 0.25 hours. Car a starts 0.25 hours earlier than car B and travels 20 kilometers more, so car a's speed is: 20 / 0.25 = 80 km / h. when meeting, car a travels 55 kilometers more than car B, including 20 kilometers of early departure, so car a travels 55-20 kilometers more than car B in 2 hours
A and B start from a and B at the same time. Car a travels 55 kilometers per hour, while car B travels 45 kilometers per hour. The two cars meet 25 kilometers away from the midpoint______ Kilometers
(25 × 2) △ 55-45, = 50 △ 10, = 5 (hours); (55 + 45) × 5 = 500 (km); answer: the distance between the two places is 500 km
Party A and Party B set out from a and B at the same time. When Party A traveled 55 kilometers, they met Party B for the first time. After meeting, they continued to move forward and arrived
B, B returns immediately after arriving at a, and a meets B for the second time when there is 35% of the whole distance from A. what is the distance between a and B?
When a and B meet for the first time, a and B make a total journey of 55 kilometers; when they meet for the second time, a and B make a total of three journeys, a should make three 55 kilometers, and a makes a unit "1" and (1-35%)
Total distance: 55 × 3 ^ (1-35% + 1) = 165 ^ 165% = 100 km
Party A and Party B start from a and B at the same time and face each other. When Party A is 55 kilometers away, they meet Party B for the first time. After meeting, they continue to move forward. When Party A arrives at place B and Party B arrives at place a, they return immediately. Party A meets Party B for the second time at 35% of the distance from place A. how many kilometers is the distance between Party A and Party B?
In the second encounter, if a walks 35% of the whole journey again, he can walk twice the whole journey, that is, 1.65
At the second meeting, Jia walked 165km
So the whole journey is 100 km
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