Explanation:
The Journal entry is shown below:-
a. Merchandise inventory Dr,       $4,700
           To accounts payable                 $4,700
(Being Purchase of merchandise is recorded)
b. Accounts payable Dr,                $1,600
            To Merchandise inventory       $1,600
(Being Return of merchandise is recorded)
c.  Accounts payable Dr,                $3,100
              To Merchandise inventory        $31
                                                            ($3,100 × 1%)
               To cash account                        $3,069
(Being the amount paid)