Trucks and cars set off to meet each other from two cities, the distance between which is 340 km. The truck was traveling

Trucks and cars set off to meet each other from two cities, the distance between which is 340 km. The truck was traveling at a speed of 70 km / h, and a passenger car at 100 km / h. In how many hours will they meet?

Let the car and the truck meet in x hours. Then a passenger car will travel – 100 * x km, and a truck will travel 70 * x km. According to the terms of the problem, together they will arrive 340 km. I.e:
100x + 70x = 340
170x = 340
x = 340/170
x = 2.
For x we took the time after which they will meet.
Answer: they will meet in 2 hours.