Malathi traveled from her house to a friend's house over 92 km at a certain speed by motorcycle and bus. If she traveled 12 km by motorcycle and the remaining distance by bus, the total time taken to reach her friend’s house would be 7/3 hours. If she traveled for  36km by motorcycle and the remaining distance by bus, then the total time taken to reach her friend’s house would take 2.4 hours. Find the sum of the speed of the motorcycle and bus