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It is known that it takes 6 o'clock for car a to go from a to B, then car B will go from B to a?
Speed sum: 1 ÷ 3.75 = 4 / 15 B car speed: 4 / 15-1 / 6 = 1 / 10 B car from a to B share how long: 1 ÷ 1 / 10 = 10 (hours)
Car a and car B are facing each other from ab at the same time and meet for the first time at 90km away from A. after meeting, the two cars continue to follow the original Other questions are added
How many kilometers are there between a and B? How many kilometers are there between a and B
Draw a picture and have a look
Take AB distance as the whole distance
Party A and Party B meet for the first time, a total of 1 journey
Among them, a line of 90 kilometers
Party A and Party B meet for the second time, totally 3 whole journey
Among them, a line 2, the whole minus 50 kilometers
Party A and Party B have three whole courses, which takes three times as long as one whole course
Then a should be OK: 90 × 3 = 270 km
That is to say, if 50 km is subtracted from the two whole routes, it is equal to 270 km
AB distance: (270 + 50) △ 2 = 160 km
Comprehensive formula: (90 × 3 + 50) △ 2 = 160 km
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