Medium2 marksMultiple Choice
Budgeting and controlVariancesPerformance Interpretation

ACCA · Question 23 · Budgeting and control

Section B - Case 2: GreenYield Agri

GreenYield Agri produces 'CropBoost', a specialized liquid fertilizer. The standard mix for 10,000 liters of input is:

  • Chemical A: 6,000 liters at $10 per liter
  • Chemical B: 4,000 liters at $15 per liter
    Standard normal loss is 20% of input (so 10,000 liters input yields 8,000 liters of CropBoost).

In May, GreenYield inputted 10,000 liters in total, consisting of 7,000 liters of Chemical A and 3,000 liters of Chemical B. Actual yield was 7,600 liters of CropBoost.

Which of the following best explains the relationship between the mix and yield variances calculated for May?

Answer options:

A.

Using a higher proportion of the cheaper Chemical A resulted in a favorable mix variance, but degraded the quality of the process, leading to higher wastage and an adverse yield variance.

B.

Using a higher proportion of the expensive Chemical B resulted in an adverse mix variance, but improved the yield.

C.

The production manager successfully optimized both cost and output quality.

D.

The variances are unrelated and caused by external market price fluctuations.

How to approach this question

Look at the results: Favorable mix (cheaper inputs) and Adverse yield (less output). Connect the cause and effect.

Full Answer

A.Using a higher proportion of the cheaper Chemical A resulted in a favorable mix variance, but degraded the quality of the process, leading to higher wastage and an adverse yield variance.✓ Correct
The mix variance was $5,000 Favorable because the company used more of the cheaper Chemical A (7,000L instead of 6,000L). However, this cheaper mix likely caused the chemical reaction to be less efficient, resulting in higher wastage (2,400L lost instead of 2,000L) and an adverse yield variance of $6,000. This highlights the danger of looking at variances in isolation.

Common mistakes

Failing to recognize the interdependent relationship between mix and yield.

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