Two leases in Northern Texas are being combined to form the North End Unit.

Lease	WI	RI	Acreage Contributed	Estimated Net Recoverable bbls
Lease 1	100% Lone Star Oil Co.	1/7 Thomas White, 1/8 Susan Brown	700 acres	270,000 bbls
Lease 2	75% Prairie Oil Inc, 25% Desert Sands Ltd	1/4 Carol Black	350 acres	320,000 bbls

Requirement:
 a. Determine the participation factors for each party assuming the participation factors are based on the acreage contributed.
 b. Determine the participation factors for each party assuming the participation factors are based on the net recoverable barrels contributed.
 c. Determine the participation factors for each party assuming the participation factors are based on the acreage contributed weighted 60% and the net recoverable barrels weighted 40%.