Dobles Corporation has provided the following data from its activity-based costing system: Activity Cost Pool Total Cost Total Activity
Assembly $228,060 18,000 mahcine hours
Processing orders $34,068 1200 orders
Inspection $125560 1720 inspection hours

The company makes 420 units of product D28K a year, requiring a total of 460 machine-hours, 80 orders, and 10 inspection-hours per year. The product's direct materials cost is $48.96 per unit and its direct labor cost is $25.36 per unit.
According to the activity-based costing system, the unit product cost of product D28K is closest to:

a. $95.34 per unit
b. $93.60 per unit
c. $74.32 per unit
d. $89.93 per unit

Hence the correct option is option (a) i.e. $95.34 per unit.

Explanation:

Cost of 420 units of D28K product = 460 machine hour cost + 80 order cost + 10 inspection hour cost + 420 direct materials cost + 420 direct labor cost.

18000 machine hours = 228060

so 460 machine hours = 228060 x 460 /18000 = 5828.2

1200 orders = 34068

80 orders = 80 x 34068 / 1200 = 2271.2

1720 inspection hours = 125560

10 inspection hours = 10 x 125560/1720 = 730

So cost of 420 units of D28 products = 5828.2 + 2271.2 + 730 + 420 x 48.96 + 420 x 25.36

=40043.8

So cost of 1 D28K product = 40043.8 / 420 = 95.34

answer (b); /// a method of measuring the opinions of a large group of people by selecting a subset of the larger group, asking them a set of questions and then generalizing those responses;