Read the passage given below and solve the questions based on it.
There are two cities Nagpur and Pune along a straight line 120 km apart. A and B start at the same time from Nagpur and Pune respectively with the speed of 40 km/h and
60 km/h respectively. They travel towards each other, and after they meet for the first time, they reverse directions and also interchange their speeds. After reaching their respective starting points, they reverse their directions and start proceeding towards each other again.
How many hours from the beginning do they meet for the second time?