Answer and Explanation:
The preparation of differential analysis is shown below:-
Differential Analysis
Make Bottles (Alt 1) or Buy Bottles (Alt 2)
31-July
Particulars Make Bottles Buy Bottles Differential effect on income
(Alt 1) (Alt 2) (Alt 2)
Sales price $0.00 $0.00 $0.00
Unit Costs:
Purchase price $0.00 $40.00 $40.00
Freight $0.00 $4.00 $4.00
Variable costs $47.00 $0.00 -$47.00
($75 per unit -$28 per unit)
Fixed factory overhead $28.00 $28.00 $0.00
Income (Loss) -$75.00 -$72.00 $3.00