A hole is to be made on mild steel with a 12 mm diameter reamer. If the under size is 0.3 mm and if the oversize is 0.05 mm, what will be the diameter of the drill for drilling the hole before reaming?

A hole is to be made on mild steel with a 12 mm diameter reamer. If th

1.	A hole is to be made on mild steel with a 12 mm diameter reamer. If the under size is 0.3 mm and if the oversize is 0.05 mm, what will be the diameter of the drill for drilling the hole before reaming?
A.	11.65 mm
B.	12.35 mm
C.	10.70 mm
D.	12.05 mm
Answer» B. 12.35 mm