ACC20007, Sem 1, 2017, Ver 1 Page 1
Cake 1
Cake 2
ACC20007
Assignment
Cake 3
Oven
Aussie bakery bakes only three types of cakes for
a large retailer.
25kwh
Oven electricity consumption is 25kwh.
ACC20007, Sem 1, 2017, Ver 1 Page 2
Assignment Part 1 (2 marks)
Suppose you have the following information.
Month
Number
of days
Cake 1 Cake 2 Cake 3
Total
cakes
(1)
Oven
electricity
usage
(kwh)
(2)
Other
electricity
usage
(kwh)
(1)+(2)
Total
electricity
usage
(kwh)
1 31 9,500 250
2 28 8,800 249
3 31 7,500 261
4 30 6,500 337.9
5 31 7,200 489
6 30 7,500 607.2
7 31 8,200 638.4
8 31 8,300 697.5
9 30 8,500 480
10 31 9,000 337.9
11 30 9,400 246
12 31 10,000 400
Complete the above table considering the following assumptions:
Total number of cake 1, cake 2 and cake 3 are 60%, 20% and 20% of total cakes.
The oven capacity is 10 cakes per load.
Cake 1 needs 30 minutes and cakes 2 and 3 need 36 minutes cooking time.
1. Compare rates of two electricity providers and choose the cheapest one based on
the electricity usage for a year.
2. Create an Excel file that can be used as a tool for comparing the electricity cost of
these two electricity providers for different levels of monthly productions. Provide a
brief guide about how this tool works and formulas used.
Electricity provider 1 Electricity provider 2
Usage/monthly Price Usage/monthly Price
First 3350 kwh 29.8 c/kwh First 2550 kwh 29.55 c/kwh
Between 3350 kwh and
5500 kwh
30 c/kwh Between 2550 kwh and
5500 kwh
29 c/kwh
Thereafter 30.01 c/kwh Thereafter 28.75 c/kwh
Supply charge per day $4.012 Supply charge per day $5 ACC20007, Sem 1, 2017, Ver 1 Page 3
Assignment Part 2 (4 marks)
Assume that monthly electricity costs (based on the cheapest electricity provider) and
production levels from Part 1 are given as historical data. Complete this table and answer
required questions using the following assumptions:
Direct material cost per cake is 60 cents.
Each cake requires 10 minutes direct labour work and the labour rate is $24
per hour.
Use the total number of cakes as the cost driver.
The relevant range is between 6,500 and 9,800 cakes.
Month
Total
Cakes
Total
Electricity
Cost
Rent
Other
expenses
Direct
material
costs
Direct
labour
costs
1 9,500 3,000 8,800
2 8,800 3,000 9,500
3 7,500 3,000 8,003
4 6,500 3,000 7,500
5 7,200 3,000 7,536
6 7,500 3,000 9,565
7 8,200 3,000 9,676
8 8,300 3,000 10,007
9 8,500 3,000 8,544
10 9,000 3,000 10,454
11 9,400 3,000 9,900
12 10,000 3,000 10,000
Required:
1. Use your judgement to classify costs as fixed, variable or mixed. Explain your
basis for your classification.
2. Draw a graph for each cost to demonstrate its behaviour using scatter diagram.
3. Estimate the total cost formula (monthly) for the bakery using the high-low and
regression methods for mixed costs.
4. Estimate the cost of producing 6400, 8,900 and 9,900 cakes per month using the
total cost formulas based on both regression and high-low methods. Explain your
results.
ACC20007, Sem 1, 2017, Ver 1 Page 4
Assignment Part 3 (5 marks)
Suppose selling price for cake 1, cake 2 and cake 3 are $7, $6.5 and $7.2, respectively. Also,
assume that the variable cost for each cake is as below:
Cake 1 100% of estimated variable cost based on the total cost formula(regression) in Part 2
Cake 2 90% of estimated variable cost based on the total cost formula(regression) in Part 2
Cake 3 110% of estimated variable cost based on the total cost formula(regression) in Part 2
Use the estimated fixed cost based on the total cost formula (estimated using regression) in
Part 2 to answer the following questions. All questions are independent unless explicitly
stated.
Required:
1. What is the breakeven point in units and sales dollars for the year for each type
of cake?
2. Calculate the number of each type of cake and their dollar values that must be
sold to beak-even, assuming that the tax rate is 30 per cent. Explain your results.
3. Calculate the margin of safety in units and dollars for a year assume the
budgeted sales is the same as given figures in Part 1. Explain your results.
4. Use the degree of operating leverage to investigate the impact of 20% increase
and 20% decrease in the sales revenue on profit. Explain your results.
5. If it is expected that fluctuations in sales will rise, what is your recommendation
about the cost structure for this business?
6. Calculate the number of each type of cake and their dollar values that must be
sold to achieve a targeted after tax profit of $150,000 assuming that the tax rate
is 10 per cent.
7. If the fixed cost increases by $20,000 per year and the variable cost decreases by
10%. How many of each type of cake do they need to sell to breakeven assuming
the same sales mix?
8. If the variable cost per cake increases by 15% and selling price by 20%, what
would be the profit?
9. What is the new break-even point, if both fixed costs and contribution margins
increase by 20%? Explain your results.
10. What is the new break-even point if the number of units sold increases by 25%?
Explain your results.
ACC20007, Sem 1, 2017, Ver 1 Page 5
Assignment Part 4 (4 marks)
The bakery’s budget for the year included the following predictions:
Budgeted total manufacturing overhead $194,521
Budgeted number of cakes 115,000
Budgeted total labour hours 17,250
Budgeted total labour costs $345,000
Budgeted total oven hours 6,210
Assuming the number of cakes, direct material costs, direct labour costs, oven hours, labour
hours and product mix in Part 1 and Part 2 are based on the actual numbers, answer the
following questions:
Required:
1. Calculate the cost of each type of cake using the following cost drivers:
a) Labour hours
b) Labour costs
c) Oven hours
2. Explain the difference between your results in Q1.
3. Calculate the overapplied or underapplied overhead for the year.