You need to design a compound reverted gear train with a 25: 1 gear ratio. (a) explain how you would go about developing this design. (b) if you were using a pressure angle of 20 and a diametrical pitch of 10, what would you suggest for the number of teeth on each gear or pinion if you were trying to get the most compact gear train possible. (c) include a rough drawing of one possible compound reverted gear train that would meet the design criteria.