Answer:
Date      Account titles and Explanation   Debit      Credit
Dec 31, 19  Lease receivables             $150,001
          Cost of goods sold            $120,000
              Sales                              $150,001
               Equipment                         $120,000
          (To record the lease)
Dec 31, 19  Cash                         $30,044
               Lease receivables                   $30,044
          (To record the receipt of lease installment)