Assume that all gear blanks are solid circular cylinders unless specified otherwise.
In Fig. 1, gear 1 has 15 teeth of Pd = 5, and turns 2150 rpm. Gear 4 has 43 teeth of Pd = 4, and turns 450 rpm. The distance between shafts A and C is 13 in. Find the number of teeth in gears 2 and 3.
Figure 1

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