How do you calculate shear stress on pins in double shear?

[iggybaseball]

On a homework assignment where a device contains three pin connections, we are asked to find the shear stress on two of the pins ( single shear) and a third which is experiencing double shear. For the single shear, I just took the force being applied at the pin connection and divided it by the surface area of the pin to get the average shear stress. However, what do I do if a pin has double shear stress? Thanks you.

 

[Pyrrhus]

When there are two shear planes, each of the shear forces is equal to half of the total load $V = \frac{P}{2}$.

 

[iggybaseball]

what does V and p stand for just to clarify?

 

[Pyrrhus]

V is the shear force and P is the applied force.