Repeat Prob. 1320 with a 25 pressure angle. Repeat Prob. 1320, A compound reverted gear train is

Question:

Repeat Prob. 13–20 with a 25◦ pressure angle.
Repeat Prob. 13–20, A compound reverted gear train is to be designed as a speed increaser to provide a total increase of speed of exactly 45 to 1. With a 20◦ pressure angle, specify appropriate numbers of teeth to minimize the gearbox size while avoiding the interference problem in the teeth.