Answer:
The missing information in the question is;
The variable manufacturing cost per unit is $22 (including direct material,labor and variable overheads)
Step-by-step explanation:
Incremental sales 2,100*25 $52,500
Variable manufacturing cost 2100*22 ($46,200)
Stamping Machine for this order ($4,000)
Incremental income from accepting the order $2,300