Answer:
6,000 composite units
Step-by-step explanation:
A B C Total
Selling price per unit 37 47 57
Less: Variable cost per unit 30 31 34
CM per unit 7 16 23
Sales mix 3 2 1
CM per sales mix 21 32 23 76
Break even in composite unit = Fixed cost / CM per sales mix
Break even in composite unit = $456,000 / 76
Break even in composite unit = 6,000