Answer:
The Journal entries are as follows:
(i) Sales Returns and allowance A/c Dr. $195
         To sales revenue               $195
(To record the correct entry for faulty merchandise)
(ii) Supplies A/c Dr. $180
  Cash A/c     Dr. $180
     To Account Payable A/c   $180
     To Merchandise Inventory A/c  $180
(To record the correct entry for the purchase of supplies)
(iii) Sales Discount A/c Dr. $215
      To Sales Revenue     $215
(To record the sales discount)
(iv) Inventory A/c Dr. $20
  Cash A/c     Dr. $180
    To Freight -Out    $200
(To record the freight on merchandise purchases)