Bill has just returned from a duck hunting trip. He has brought home eight ducks. Bills friend, John, disapproves of duck hunting, and to discourage Bill from further hunting, John has presented him with the following cost estimate per duck:

Camper and equipment:
Cost, $1,300; usable for eight seasons; 10 hunting trips per season	$	130
Travel expense (pickup truck):
100 miles at $0.47 per mile (gas, oil, and tires$0.28 per mile; depreciation and insurance $0.19 per mile)		47
Shotgun shells (two boxes)		35
Boat:
Cost, $2,640, usable for eight seasons; 10 hunting trips per season		33
Hunting license:
Cost, $70 for the season; 10 hunting trips per season		7
Money lost playing poker:
Loss, $36 (Bill plays poker every weekend)		36
Bottle of whiskey:
Cost, $20 (used to ward off the cold)		20
Total cost	$	261
Cost per duck ($261 8 ducks)	$	33

1.

Assuming that the duck hunting trip Bill has just completed is typical, what costs are relevant to a decision as to whether Bill should go duck hunting again this season?

Travel expense
Shotgun shells	35
One bottle of whiskey	20
Total	$55

2.

Suppose that Bill gets lucky on his next hunting trip and shoots 10 ducks in the amount of time it took him to shoot 8 ducks on his last trip. How much would it have cost him to shoot the last two ducks?

Cost of last two ducks