Two leases in Southern Alberta are being combined to form the South Field Unit.

Lease	WI	RI	Acreage Contributed	Estimated Net Recoverable bbls
Lease 1	100% Prairie Oil Co.	1/7 David Black, 1/8 Sarah Green	850 acres	340,000 bbls
Lease 2	75% Canyon Sands Ltd, 25% River Oil Inc	1/4 Mark White	500 acres	400,000 bbls

Requirement:
 a. Calculate the participation factors for each party based on the acreage contributed.
 b. Calculate the participation factors for each party based on the net recoverable barrels contributed.
 c. Calculate the participation factors for each party based on the acreage contributed weighted 50% and the net recoverable barrels weighted 50%.