Two cars drove out of the city simultaneously in opposite directions. The speed of the first car is 78.4 km / h

Two cars drove out of the city simultaneously in opposite directions. The speed of the first car is 78.4 km / h, and the speed of the second is 73.2 km / h. In how many hours will the distance between them be equal to 394.16 km?

1. Let’s find the total speed of two cars, knowing that the speed of the first is 78.4 km / h, and the speed of the second is 73.2 km / h.
78.4 + 73.2 = 151.6 km / h.
2. Let’s find, after how many hours the distance between two cars will be equal to 394.16 km.
394.16: 151.6 = 2.6 hours.
Answer: The distance between the two cars will be 394.16 km in 2.6 hours.