The number of passengers travelling in sleeper class of train Q is approximately what percent of the number of passengers of both train P and train Q together?

Study the following information carefully and answer the given questions. A train has four types of coaches – General, sleeper. First class and 3 AC. On a platform two trains – Train P and train Q are standing. Train P has 800 passengers, which is 60% more than the passengers in train Q. One – fourth of the total number of passengers of train Q are in general coach. 32% of the remaining passengers of train Q are in 3 AC coach. 28% of the passengers of train Q are in sleeper class. The total number of passengers in 3AC coaches of both the trains is 420. 40% of the total number of passengers of train P are in sleeper class. 10% of the total passengers of train P are in first class coach.