Assign overhead using
traditional costing and ABC; compute unit costs; |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Combat Fire, Inc. manufactures
steel cylinders and nozzles for two models of fire extinguishers:
(1) a home fire extinguisher |
|
|
|
|
|
|
|
and (2) a commercial fire
extinguisher. The home model is a high-volume (54,000 units),
half-gallon cylinder that holds 2 1/2 |
|
|
|
|
|
|
pounds of multi-purpose dry
chemical at 480 PSI. The commercial model is a low-volume (10,200
units), two-gallon cylinder |
|
|
|
|
|
|
that holds 10 pounds of
multi-purpose dry chemical at 390 PSI. Both products require 1.5
hours of direct labor for completion. |
|
|
|
|
|
|
Therefore, total annual direct
labor hours are 96,300 or [1.5 hours x (54,000 + 10,200)]. Expected
annual manufacturing |
|
|
|
|
|
|
|
overhead is $1,584,280. Thus,
the predetermined overhead rate is $16.45 or ($1,584,280 ÷ 96,300)
per direct labor hour. |
|
|
|
|
|
|
|
The direct materials cost per
unit is $18.50 for the home model and $26.50 for the commercial
model. The direct labor cost |
|
|
|
|
|
|
|
is $19 per unit for both the
home and the commercial models. |
|
|
|
|
|
|
|
|
|
|
|
The
company's managers identified six activity cost pools and related
cost drivers and accumulated overhead by cost pool |
|
|
|
|
|
|
|
as follows. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Estimated |
|
Expected Use of |
|
|
|
|
|
|
|
|
|
Estimated |
|
Use of Cost |
|
Drivers by Product |
|
|
|
Activity Cost Pools |
|
Cost Drivers |
|
Overhead |
|
Drivers |
|
Home |
|
Commercial |
|
|
|
Receiving |
|
|
Pounds |
|
|
$80,400 |
|
335,000 |
|
215,000 |
|
120,000 |
|
|
|
Forming |
|
|
Machine hours |
|
|
150,500 |
|
35,000 |
|
27,000 |
|
8,000 |
|
|
|
Assembling |
|
Number of parts |
|
412,300 |
|
217,000 |
|
165,000 |
|
52,000 |
|
|
|
Testing |
|
|
Number of tests |
|
51,000 |
|
25,500 |
|
15,500 |
|
10,000 |
|
|
|
Painting |
|
|
Gallons |
|
|
52,580 |
|
5,258 |
|
3,680 |
|
1,578 |
|
|
|
Packing and shipping |
|
Pounds |
|
|
837,500 |
|
335,000 |
|
215,000 |
|
120,000 |
|
|
|
|
|
|
|
|
|
$1,584,280 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Instructions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(a) Under traditional product
costing, compute the total unit cost of each product. Prepare a
simple comparative |
|
|
|
|
|
|
|
schedule of the individual
costs by product (similar to Illustration 4-3 on page 5). |
|
|
|
|
|
|
|
|
|
(b) Under ABC, prepare a
schedule showing the computations of the activity-based overhead
rates (per cost driver). |
|
|
|
|
|
|
|
(c) Prepare a schedule
assigning each activity's overhead cost pool to each product based
on the use of cost drivers. |
|
|
|
|
|
|
|
(Include a computation
of overhead cost per unit, rounding to the nearest cent.) |
|
|
|
|
|
|
|
|
|
(d) Compute the total cost per
unit for each product under ABC. |
|
|
|
|
|
|
|
|
|
|
|
(e) Classify each of the
activities as a value-added activity or a non-value-added
activity. |
|
|
|
|
|
|
|
|
|
(f) Comment on (1) the
comparative overhead cost per unit for the two products under ABC,
and (2) the comparative |
|
|
|
|
|
|
|
total costs per unit under
traditional costing and ABC. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NOTE: Enter a number in cells
requesting a value; enter either a number or a formula in cells
with a "?" . |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Products |
|
|
|
|
|
|
|
|
|
(a) |
Manufacturing Costs |
Home Model |
|
Commercial Model |
|
|
|
|
|
|
|
|
|
|
Direct materials |
$
18.50 |
|
$
26.50 |
|
|
|
|
|
|
|
|
|
|
Direct labor |
|
$
19.00 |
|
$
19.00 |
|
|
|
|
|
|
|
|
|
|
Overhead |
|
|
$
24.68 |
|
$
23.68 |
|
|
|
|
|
|
|
|
|
|
Total unit cost |
$
62.18 |
|
$
69.18 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Expected Use of Drivers |
|
|
|
|
|
|
|
|
|
|
|
Estimated |
÷ |
Expected Use of |
|
|
= |
Activity-Based |
|
|
|
|
|
(b) |
Activity Cost Pool |
Overhead |
|
Cost Drivers |
|
|
|
OH Rate |
|
|
|
|
|
|
Receiving |
|
|
$
80,400.00 |
|
$ 335,000.00 |
|
Pounds |
|
$0.24 |
|
|
|
|
|
|
Forming |
|
|
$
150,500.00 |
|
$ 35,000.00 |
|
MH |
|
$4.30 |
|
|
|
|
|
|
Assembling |
|
$
412,300.00 |
|
$ 217,000.00 |
|
|
|
$1.90 |
|
|
|
|
|
|
Testing |
|
|
$
51,000.00 |
|
$ 25,500.00 |
|
Tests |
|
$2.00 |
|
|
|
|
|
|
Painting |
|
|
$
52,580.00 |
|
$ 5,258.00 |
|
Gallons |
|
$10.00 |
|
|
|
|
|
|
Packing and shipping |
$
837,500.00 |
|
$ 335,000.00 |
|
Pounds |
|
$2.50 |
|
|
|
|
|
|
|
|
|
$
158,428.00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(c) |
|
|
|
Home Model |
|
Commercial Model |
|
|
|
|
|
MH |
x |
Activity-Based |
= |
Cost |
|
Expected Use |
x |
Activity-Based |
= |
Cost |
|
|
Activity Cost Pool |
of Drivers |
|
OH Rates |
|
Assigned |
|
of Drivers |
|
OH Rates |
|
Assigned |
|
|
Receiving |
|
|
$
215,000.00 |
|
$0.24 |
|
$
51,600.00 |
|
$ 120,000.00 |
|
$0.24 |
|
$ 28,800.00 |
|
|
Forming |
|
|
$
27,000.00 |
|
$4.30 |
|
$
116,100.00 |
|
$ 8,000.00 |
|
$4.30 |
|
$ 34,400.00 |
|
|
Assembling |
|
$
165,000.00 |
|
$1.90 |
|
$
313,500.00 |
|
$ 52,000.00 |
|
$1.90 |
|
$ 98,800.00 |
|
|
Testing |
|
|
$
15,500.00 |
|
$2.00 |
|
$
31,000.00 |
|
$ 10,000.00 |
|
$2.00 |
|
$ 20,000.00 |
|
|
Painting |
|
|
$
3,680.00 |
|
$10.00 |
|
$
36,800.00 |
|
$ 1,578.00 |
|
$10.00 |
|
$ 15,780.00 |
|
|
Packing and shipping |
$
215,000.00 |
|
$2.50 |
|
$
537,500.00 |
|
$ 120,000.00 |
|
$2.50 |
|
$ 300,000.00 |
|
|
Total cost assigned
(a) |
|
|
|
|
$
1,086,500.00 |
|
|
|
|
|
$ 497,780.00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Units produced |
|
|
|
|
$
54,000.00 |
|
|
|
|
|
$ 10,200.00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
OH cost per unit (a) +(b) |
|
|
|
|
$
20.12 |
|
|
|
|
|
$
48.80 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|