From two cities between which 2055 km 2 cars drove towards each other. One left 30 minutes earlier

From two cities between which 2055 km 2 cars drove towards each other. One left 30 minutes earlier and drove at a speed of 150 km / h, and two went at a speed of 300 km / h. The question is in how many hours will they meet?

1. Let’s find what distance the first car will travel to the second exit. To do this, multiply the speed of the first car by 0.5 hours.
150 * 0.5 = 75 km
2. Find the distance between the cars at the moment the second car leaves.
2055 – 75 = 1980 km
3. Let’s find the speed of convergence of cars, since they are going to meet each other, let’s sum up their speeds.
150 + 300 = 450 km / h speed of convergence of cars.
4. Find the time after which the cars will meet. To do this, we divide the distance between the cars by the approach speed.
1980/450 = 4.4 hours
Answer: Cars will meet in 4.4 hours = 4 hours 24 minutes.