Question:
Bronx Machinery Inc. is a job shop. The management of Bronx Machinery uses the cost information from the job sheets to assess their cost performance. Information on the total cost, product type, and quantity of items produced is as follows:
|
Date
|
Job No.
|
Quantity
|
Product
|
Amount
|
|
Jan. 2
|
101
|
450
|
105X
|
$10,350
|
|
Jan. 24
|
125
|
1,500
|
205B
|
16,500
|
|
Feb. 18
|
144
|
750
|
205B
|
9,000
|
|
Mar. 4
|
162
|
500
|
105X
|
10,000
|
|
Mar. 28
|
173
|
1,100
|
120T
|
6,600
|
|
May 20
|
190
|
1,250
|
120T
|
11,250
|
|
June 10
|
201
|
450
|
105X
|
6,750
|
|
Aug. 9
|
210
|
1,900
|
120T
|
22,800
|
|
Sept. 16
|
215
|
500
|
205B
|
5,500
|
|
Nov. 11
|
227
|
650
|
105X
|
7,800
|
|
Dec. 9
|
238
|
1,050
|
120T
|
16,800
|
a. Develop a graph for each product (three graphs), with Job No. (in date order) on the horizontal axis and unit cost on the vertical axis. Use this information to determine Bronx Machinery's cost performance over time for the three products.
b. What additional information would you require to investigate Bronx Machinery's cost performance more precisely?