Presented below are four independent transactions: (1) Deyar Company sells exercise machines for home use. The machines carry a 2-year warranty. Past experience indicates that 6% of the units sold will be returned during the warranty period for repairs. The average cost of repairs under warranty is $80 for labor and $120 for parts per unit. During 2019, 2,500 exercise machines were sold at an average price of $1,000. During the year, 60 of the machines that were sold were repaired at the average price per unit. (2) Sarina Corporation purchased $350,000 of its bonds on June 30, 2018, at 102 and immediately retired them. The carrying value of the bonds on the retirement date was $350,000. (3) Yas Corporation purchased $500,000 of its bonds at 97 on December 31, 2017, and immediately retired them. The carrying value of the bonds on the retirement date was $490,000. The bonds pay semiannual interest and the interest payment due on December 31, 2017, has been made and recorded. (4) Ruwaya Company has $80,000, 10%, 12-year convertible bonds outstanding. These bonds were sold at face value and pay semiannual interest on June 30 and December 31 of each year. The bonds are convertible into 100 shares of Ruwaya $6 par value common stock for each $1,000 par value bond. On December 31, 2019, after the bond interest has been paid, $30,000 par value of bonds were converted. The market value of Ruwaya's common stock was $10 per share on December 31, 2019. Instructions For each of the independent situations, prepare journal entries to record the necessary transactions