XYZ Company recorded the following information related to their inventory
accounts for 2020:

                          January 1, 2020        December 31, 2020
Direct materials               31,000                   50,000
Work in process                38,000                   41,000
Finished goods                 22,000                   34,000

The following information was taken from XYZ Company's accounting records
for 2020:

Sales revenue ...........................................   $630,000
Direct materials purchased ..............................       ?
Depreciation, factory equipment .........................     34,000
Prime costs .............................................    250,000
Utilities (60% for factory; 40% for office building) ....     20,000
Sales commissions .......................................     71,000
Indirect materials ......................................       ?
Depreciation, office equipment ..........................     30,000
Rent, factory building ..................................     56,000
Net income ..............................................     10,000
Direct labor ............................................       ?
Advertising .............................................     68,000
Production supervisor's salary ..........................     74,000

Additional information:

1.  Direct labor comprised 35% of the conversion costs for 2020.

2.  The actual overhead cost for 2020 was equal to the overhead applied
    to production. Thus there was no overhead variance for 2020.

Calculate XYZ Company's indirect materials cost for 2020.

XYZ Company recorded the following information related to their inventory
accounts for 2020:

                          January 1, 2020        December 31, 2020
Direct materials               31,000                   50,000
Work in process                38,000                   41,000
Finished goods                 22,000                   34,000

The following information was taken from XYZ Company's accounting records
for 2020:

Sales revenue ...........................................   $630,000
Direct materials purchased ..............................       ?
Depreciation, factory equipment .........................     34,000
Prime costs .............................................    250,000
Utilities (60% for factory; 40% for office building) ....     20,000
Sales commissions .......................................     71,000
Indirect materials ......................................       ?
Depreciation, office equipment ..........................     30,000
Rent, factory building ..................................     56,000
Net income ..............................................     10,000
Direct labor ............................................       ?
Advertising .............................................     68,000
Production supervisor's salary ..........................     74,000

Additional information:

1.  Direct labor comprised 35% of the conversion costs for 2020.

2.  The actual overhead cost for 2020 was equal to the overhead applied
    to production. Thus there was no overhead variance for 2020.

Calculate the direct materials purchased by XYZ Company in 2020.

XYZ Company recorded the following information related to their inventory
accounts for 2020:

                          January 1, 2020        December 31, 2020
Direct materials               31,000                   50,000
Work in process                38,000                   41,000
Finished goods                 22,000                   34,000

The following information was taken from XYZ Company's accounting records
for 2020:

Sales revenue ...........................................   $630,000
Direct materials purchased ..............................       ?
Depreciation, factory equipment .........................     34,000
Prime costs .............................................    250,000
Utilities (60% for factory; 40% for office building) ....     20,000
Sales commissions .......................................     71,000
Indirect materials ......................................       ?
Depreciation, office equipment ..........................     30,000
Rent, factory building ..................................     56,000
Net income ..............................................     10,000
Direct labor ............................................       ?
Advertising .............................................     68,000
Production supervisor's salary ..........................     74,000

Additional information:

1.  Direct labor comprised 35% of the conversion costs for 2020.

2.  The actual overhead cost for 2020 was equal to the overhead applied
    to production. Thus there was no overhead variance for 2020.

Calculate XYZ Company's indirect materials cost for 2020.

Do "sweatshops" exploit their workers? How do the employment opportunities at the sweatshop compare with the alternatives available to the employees? If the sweatshop was closed, would the employees be helped or hurt?

In a closed economy taxes are $750 billion, government expenditures are $900 billion, and investment is $400 billion. What are private saving, public saving and national saving?

Calculate the volume of the closed body with z² + (x - 2)² = 4, y = 3 and x + y = 8 surfaces with a double integral of polar coordinates.

Why is it not possible for all countries to follow a demand-focused (i.e. expansionary) growth strategy, given that the world can be viewed as a closed economy? - 15 marks

Rebreathing from a closed bag results in arterial hypercapnia (raised partial pressure of carbon dioxide), which stimulates respiration. Briefly explain this neural mechanism.