CHAPTER 10 Cost–volume–profit analysis 455
c. Explain why Cone Head House’s manager might be willing to sell cones at the minimum
selling price you calculated in part (b).
10.44 Contribution margin ratio LO2, 3
The Coffee Club sells specialist coffee drinks from a rented cart on the beachside on the Gold
Coast. Provided below is a summarised version of the statement of profit or loss for July 2016.
Sales revenue
Cost of beverages
Cost of napkins
Rent of cart
Wages
$2 500
550
550
1 250
$5 500
4 850
Profit $ 650
The cost of beverages and napkins are classified as variable costs.
Required
a. Calculate the contribution margin ratio.
b. Calculate the break-even sales in dollars.
10.45 Profitability with resource limitations LO7
Coconut Plantations Pty Ltd manufactures three coconut-based products, candles, soaps and
detergents. On average 75 000 candles, 50 000 soaps and 125 000 detergents are sold. Next year,
the company has a restricted advertising budget of $40 000, which is sufficient to effectively pro-
mote only one of its products. The marketing department estimates that average sales of candles
will increase by 25 per cent if they are advertised, while soaps average sales will increase by
20 per cent and detergents will increase by 10 per cent if they are advertised. The following data
is provided.
Candles Soaps Detergents
Selling price per unit
Variable cost per unit
Machine hours per unit
Fixed costs are estimated to be $600 000.
$25
$15
1 hour
$38
$22
3 hours
$20
$12
1 hour
Required
a. Calculate the contribution margin for each product.
b. Calculate the contribution margin per machine hour for each product.
c. Assuming unlimited machine hours are available, which product should be promoted in the
advertising campaign?
d. Would your answer to (c) change if now there were 300 000 machine hours available for
production?
e. Prepare a statement of profit or loss after you have made your decisions in (c) and (d).
f. Discuss when to use the contribution margins calculated in your answers to (a) and (b) above.
10.46 Relevant information for decision making LO8
Magic Dusters is considering a special order from Stay Clean Ltd for a special cleaning product
for windows. One ingredient required for the product is Alpha A which Magic Dusters has in its
inventory. Magic Dusters current products do not use Alpha A; however, it was an ingredient in
one of Magic’s discontinued product lines. Alpha A was purchased at a cost of $10 per litre, and
could be currently sold for $5 per litre, with a replacement cost of $12 per litre.
Required
You have been requested to prepare a financial analysis of the special order from Stay Clean Ltd.
Given that 1000 litres of Alpha A are required in production of this order what is the relevant cost
of Alpha A to be included in the analysis?