The diagram below shows a gear system consisting of two meshing gears, Gear P and Gear Q. Gear P has 48 teeth and Gear Q has 18 teeth.
A third gear, Gear R, is added to the system so that it rotates in the same direction as Gear P but at the exact same speed as Gear Q.
a.[1]
State which gear (Gear P or Gear Q) the new Gear R must mesh with.
b.[1]
State the number of teeth Gear R must have.