Verified Answer :

grey59
  1. 2,430 
    5. 1,410
    6. 4,368
    7. 675

    8. 2,210
    9. 436
    10. 1,020
    11. 2,790
    12. 5,586


    13.20-1200 
         25-1500
    Rule: adding 300.

    14. 8,832
    15. Total of 1,428 seats.


(4) 2430
(5) 1410
(6) 4368
(7) 675
(8) 2210
(9) 546
(10) 1020
(11) 2790
(12) 5586
(13) 1200 (13) 1500
(14) 552
(15) don't really understand the problem can't really see it