Now, if the ordinary seats are replaced by deluxe seats, that is, 199 ordinary seats and 1 deluxe seats, the fares are 4,075 yuan and 45 yuan respectively, and the ordinary seats are 4,030 yuan more than the deluxe seats. Compared with the original 5,000 yuan, the surplus is less than that of 70 yuan. In this way, every time one is replaced, the redundant part will be less 70 yuan.
In fact, the fare of ordinary seats is more than that of deluxe seats 10 10 yuan, 5000-10/kloc-0 = 3990 yuan. How many seats should be replaced? Namely: 3990/70 = 57.
So the ordinary seat is: 200-57 = 143.
Deluxe seats: 57 seats