Atrain broke down and the passengers had to alight and take buses to continue their journey. when the first bus came, 1/4 of the passengers tried to board, but 4 of them were not able to get on. when the second bus came, 1/2 o the remaining passengers tried to board, but 6 of them were not able to get on. when the third bus came, 3/4 of the remaining passengers boarded. there were still 8 passengers left stranded. how many passengers were on the train?