Answer:

Shore Co. journal entries:
Cash ($112,000 – $2,240 + $1,800) 111,560
Sales Discounts ($112,000 × 2%) 2,240
Accounts Receivable—Blue Star Co. ($112,000 + $1,800) 113,800
Blue Star Co. journal entries:
Accounts Payable—Shore Co. ($112,000 + $1,800) 113,800
Merchandise Inventory ($112,000 × 2%) 2,240
Cash ($112,000 – $2,240 + $1,800) 111,560