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The distance between the two places is 255km, and two cars leave each other at the same time. Car a travels 45km per hour, and car B 40km per hour Q: how many kilometers did the two cars travel when they met?
Time spent on meeting: 255 / (45 + 40) = 3 hours
A: 45 * 3 = 135 km
B: 40 * 3 = 120 km
Party A and Party B set out from ab at the same time, which is 100km away. Party A is 60km / h, and Party B is 40km / h. Party A takes a dog, which is 10km / h, and runs to Party B first
B immediately ran back to a and ran back to Yi after meeting a. the dog didn't stop until a and B met and asked: how many kilometers did the dog run?
100÷（60+40）×10
=1×10
=10km
Party A and Party B start from ab at the same time. Party A meets Party B at five ninths of the way. At this time, Party B is 40km away from the midpoint. How many km is the distance between AB and Party B?
40÷（5/9-1/2）
＝40÷（10/18-9/18）
＝40÷1/18
= 720km
I'm glad to help you,
A and B leave from ab at the same time. A travels 40km per hour. B's speed is 125% of a's. after meeting, B continues to travel 1.6 hours to A. how many meters is the distance between AB and a
Speed of B: 40 × 125% = 50 km
Distance of a line when meeting: 50 × 1.6 = 80 km
Time for meeting: 80 △ 40 = 2 hours
The distance between the two places is (50 + 40) × 2 = 180 km
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