... (2) (3) (4) (5) 3000 - 27 00 26 99 - 24 00 23 99 - 21 00 20 99 - 1800 1799 - 1500 1499 - 120 0 1199 - 900 1 2 3 11 18 12 3 2, 0 4,0 6,0 22 ,0 36,0 24 ,0 6,0 0,06 0, 12 0 ,20 ... 180,63 1 126 ,27 422 ,71 377,91 866,71 18,15 113,85 26 6,67 348,57 69,39 560 ,27 21 5 ,21 1 52, 03 693 ,27 626 438 3336,71 4640,16 24 38,01 Trang 32 Tờnh a vaỡ b: a =95 ,26 7,48.01 ,24 3871,333656,69 2 11==bbnbana ... (ki-1) 2 p =1+nm 100%(1) (2) (3) (4) (5) (6) (7) (8) 1 2 3 4 5 6 7 8 9 10 11 12 13 37 30 18 43 20 15 41 17 40 22 23 27 31 43 41 40 37 31 30 27 23 22 20 18...