-
Anonymous users2024-02-07Assuming that the speed of A and B is that the distance between the two stations is Z, the first time is after the t1 time, and the second time is T2, when the first encounter, A and B have traveled the whole distance Z, because the first time they meet 12 kilometers west of the midpoint, and it is 12kmt1=z 2-12 xThe second meeting place is 20 kilometers away from the East Railway Station, and A has already traveled Z+20kmT2=Z+20 x The system of equations (Z 2-12) (x+y) x=Z can be obtained from the above; (x+y)(z+20) x=3zEquation2 Equation 1 yields (2z+40) (z-24)=3 and z=112
-
Anonymous users2024-02-06Let the distance from l two stations to the midpoint be x
The distance traveled by car A: the distance traveled by car B = the speed of car A: the speed of car B (the time taken by car A and B is the same).
So: (12+x) (x-12)=(2*x-12+x-20) (12+x+20).
12+x)/(x-12)=(3x-32)/(32+x)384+44x+x^2=3x^2-68x+3842x^2-112x=0
x(x-56)=0
The solution is x=56 2x=112
The distance between the east and west stations is 112 kilometers.
-
Anonymous users2024-02-05The first time they met, the two walked a whole journey together, and Jiaduo walked 2*12=24 kilometers.
The second time they met, the two walked three full journeys, and A should walk an extra 3*24=72 kilometers.
The distance between the two places: 20 + 20 + 72 = 112
-
Anonymous users2024-02-041. Even if only Xiaohong takes a taxi alone, it costs so much money, so in the first case, Xiaohong bears everything, and Xiaoli doesn't pay for it.
2. Two people share equally.
3. According to the distance is proportionally apportioned, Xiaohong's distance is a multiple of Xiaoli's, so Xiaoli pays 1 money, and Xiaohong pays 1 money.
Then the money that Xiaoli paid for.
Xiaohong's money is.
-
Anonymous users2024-02-03Analysis: This question is mainly based on the ratio of distance to determine the ratio of money.
The ratio of the fare shared between the two is 8:12=2:3
So Xiaoli pays Yuan, Xiaohong pays Yuan.
-
Anonymous users2024-02-02It is divided according to the actual mileage traveled by each person.
Xiaoli rides 8km and Xiaohong rides 12km
Small force bears the fare =
Xiaohong bears the fare = yuan.
-
Anonymous users2024-02-01Oh, according to the actual mileage ratio to share, Xiaoli 8 yuan, Xiaohong 12 yuan.
-
Anonymous users2024-01-31。So pay for it. Because taxis don't care about the number of people, only the total distance!
-
Anonymous users2024-01-301500 (square decimeter).
2）15×（7-4）+4x4
61 (hand pure square decimeter) is good to block.
The solution to the combination of graphics can be cut and repaired, divided, and rotated.
Are you satisfied?
1. A completes one-fifth of the work in 3 days, then completes 1 15 in one day, and B completes two-fifths of the work in 4 days, then completes 1 10 in one day, and two people can complete this work in one day. >>>More
1.Fill a cylindrical cup with r of 10cm with water, put a conical plumb with a bottom r of 5cm in the water, when the plumb is taken out of the water, the water in the cup falls, what is the h of this plumb? >>>More
1) 5525 is obviously divisible by the smallest prime number 5 except 1, which is the easiest to see, so after dividing 5, we can get 1105, and the same as above can obviously be divided by 5 again, and we get 221, which is already a prime number, so the 3 prime numbers found are 5,5,221, so the surface area can be s=2(5*5+5*221+5*221)=4470 >>>More
In order to carry out sports activities, the class used the class fee to buy basketball and volleyball. It is known that it costs 274 yuan to buy 3 basketballs and 2 volleyballs; It costs 478 yuan to buy 5 basketballs and 4 volleyballs. then How much does a basketball cost? How much does a volleyball cost? >>>More
1。The total length of this road is y.
40%*y+4+50%*y=y-36 >>>More