Answer:
a. Date Accounts Title & Explanation Debit $'m Credit $'m
Dec 31, 2017 Cost of Goods Sold $111,934 
 Inventories $111,934
 (COGS recorded for 2017 sale)
b. Date Accounts Title & Explanation Debit $'m Credit $'m
Dec 31, 2017 Inventories $116,520
 Accounts Payable $116,520
 (Inventories purchased in 2017)
Inventory Purchases = COGS + Closing Inventory - Opening Inventory = $111,934 + $16,047 - $11,461 = $116,520
c. Date Accounts Title & Explanation Debit $'m Credit $'m
Dec 31 2017 Accounts Payable $107,213
 Cash $107,213
 (Payment to suppliers for 2017 purchases)
Payment to suppliers = Purchases + Opening AP balance - Closing AP Balance = $116,520 + $25,309 - $34,616 = $107,213.