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Party A and Party B start from the East and West cities at the same time. They can meet each other in 10 hours. In fact, it takes 4 hours A and B set out from the East and West cities at the same time, facing each other. After 10 hours, they can meet on the way. In fact, 4 hours later, a stopped on the way, and B walked for another 12 hours to meet A. how many hours does it take for B to finish the journey alone? PS: no scattering of equations OK
Four hours later, party a stopped because of the accident, Party A and Party B walked for four hours and walked for the whole length
1 / 10 × 4 = 2 / 5
B walked all the way alone in 12 hours
2 out of 1-5 = 3 out of 5
It will take B a long time to finish the journey alone
12 △ 3 / 5 = 20 (hours)
Party A and Party B are facing each other from the East and West cities (starting at the same time). Party A meets Party B at 5 / 11 of the whole journey
It is known that a travels 4.5 kilometers per hour, and it takes 5.5 hours to complete the whole journey. Q: how many kilometers are there between a and B?
According to the meaning of the title, the ratio of speed between a and B is 5 / 11: (1-5 / 11) = 5:6,
So the speed of B is 4.5 ÷ (5 / 6) = 5.4 km / h,
The distance between city a and city B is 5.4x5, 5 = 29.7km
A and B start from the East and West cities at the same time. They can meet each other in 10 hours. In fact, a stops in 4 hours and B stops in the middle
It took another 12 hours to meet A. how many hours does it take for B to finish the journey alone?
It takes x hours for a to walk alone
Then B needs y hours
Then 1 / x + 1 / y = 1 / 10
4/x+12/y=1
The solution is y = 40 / 3
So B takes 40 / 3 hours
A and B start from the East and west at the same time, and run in opposite directions. They meet in 6 hours. If the speed of the two vehicles increases by 6 kilometers, they meet in 5.4 hours?
It turns out that the two cars travel the whole journey every hour
1 △ 6 = 1 / 6
Now the two cars travel the whole journey every hour
1 △ 5.4 = 5 / 27
What is the distance between the two cities
6 × 2 ÷ (5 / 27-1 / 6) = 648 (km)
RELATED INFORMATIONS
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