The two vehicles a and B depart from two places 360 km apart. It is known that the speed of vehicle a is 60 km / h and that of vehicle B is 40 km / h. If vehicle a drives 1 km / H first, the speed of vehicle B is 40 km / h

The two vehicles a and B depart from two places 360 km apart. It is known that the speed of vehicle a is 60 km / h and that of vehicle B is 40 km / h. If vehicle a drives 1 km / H first, the speed of vehicle B is 40 km / h

If a drives for an hour first, how long will it meet
(360-60) / (60 + 40) = 3 hours
If a drives 100 kilometers first, how long will they meet
(360-100) / (60 + 40) = 2.6 hours