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A pair of worm gear is written as 2/40/12/6. Calculate the speed reduction.

(a) 2

(b) 20

(c) 15

(d) 6

I am trying to understand this question from during a technical interview.

Question is taken from the Worm Gears module in unit Bevel Gears, Worm Gears and FlyWheel of Machine Design

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