problems 29,31,33. show all work (please write neatly)

Find the speed in rpm of gear D in each gear train. A = 60 teeth B =30 teeth 29. at 1680 rpm D = 48 teeth 30. /D = 48 teeth C = 15 teeth C= 20 teeth A = 30 teeth B= 45 teeth at 738 rpm B =30 teeth 31. 32. A = 20 teeth D = 12 teeth C = 48 teeth at 240 rpm O C = 10 teeth w belog A = 45 teeth D = 20 teeth B = 30 teeth at 160 rpm E = 45 teeth 33. C = 45 teeth D = 15 teeth A =60 teeth B= 48 teeth at 370 rpm