Two hours later, they are 36 kilometers apart, and two hours later, they are still 36 kilometers apart Note: it's a system of linear equations with two variables!

Two hours later, they are 36 kilometers apart, and two hours later, they are still 36 kilometers apart Note: it's a system of linear equations with two variables!

Isn't it? This problem also needs equations?
Let v be the sum of the velocities and s be the distance
2v=s-36
(2+2)v=s+36
v=36
s=108
AB is 108 km away

A and B start at the same time from ab at 8:00 a.m. and run in opposite directions. It is known that the speed of a is 2 km / h faster than that of B. by 10:00 a.m., the distance between the two vehicles is 36 km
After two hours, the two cars are still 36 kilometers apart. (1) find the speed of the two cars and the distance between ab? (2) if the two cars of a and B are facing each other from ab at the same time, and return to Ba immediately, find out how many hours after the two cars meet for the first time?

Let B speed x, then a speed x + 2
1.2*（x+2+x）=36+36
If x = 17, then x + 2 = 19
ab=（17+19）*（10-8）+36=108
2.108*2/（17+19）=6

A and B start at the same time from AB and run in opposite directions. It is known that the speed of a is 2 km / h faster than that of B. by 10 a.m., the distance between the two vehicles is 36 km,
A and B start from ab at 8:00 a.m. and run in opposite directions. It is known that the speed of a is 2 km / h faster than that of B. by 10:00 a.m., the two cars are 36 km apart. After two hours, the two cars are 36 km apart. How about the speed of the two cars and the distance between ab?

The first time a and B did not meet, 36 kilometers apart
The second time we met, we drove 36 kilometers more than the whole journey
Draw a line diagram. In two hours, Party A and Party B have driven 36 × 2 = 72 km
So the speed and 72 / 2 = 36 km
I can't count the whole journey. What time did you start?

A. B. A. B. A. B. B. A. B. B. A. B. B. A. B. B. B. A. B. B. B. A. B. B. B. A. B. B. B. A. B. B. B. A. B. B. B. B. A. B. B. B. B. A. B. B. B
It must be solved by the equation of grade one

8-10 am is 2 hours
10 a.m. - 12 noon is two hours
The sum of speed is (36 + 36) △ 2 = 36 km / h
The distance between AB and ab is 36 × 2 + 36 = 108 km