Calculate the gear ratio of the compound gear train on the left.

For every turn of gear "A" how many turns will gear "D" complete?
Is this a speed multiplier?

Calculate the gear ratio of the compound gear train on the left.

For every turn of gear "A" how many turns will gear "D" complete?
Is this a speed multiplier?

Calculate the gear ratio of the compound gear train on the left.

For every turn of gear "A" how many turns will gear "D" complete?
Is this a speed multiplier?

Calculate the gear ratio of the compound gear train on the left.

For every turn of gear "A" how many turns will gear "D" complete?
Is this a speed multiplier?