what is the total amount to be paid in full settlement of novice a ?

Purchase invoices $ b. $ a C d. Invoice $ Freight and Credit Terms 3.600 FOB destination, 2/10, n/45 7.300 FOB shipping point. 2/10, n/30 7.100 FOB shipping point, 2/10, n/45 63 $ 20,000 FOB destination, 2/20. n/60 Print Transportation Returns and Charges Allowances 10 62 GA LA Done -X 60 S 140 S 210 S 175 S 280 80 450 610