Answer:
differential profit = $360
Step-by-step explanation:
total variable production costs:
materials $11 x 100 = $1,100
direct labor $8 x 100 = $800
variable overhead $2 x 100 = $200
total = $2,100
+
special packaging $140
= total costs $2,240
differential profit = $2,600 - $2,240 = $360