Hard20 marksExtended Response
Budgeting and controlStandard CostingPlanning and Operational VariancesPerformance Measurement

ACCA · Question 31 · Budgeting and control

Section C - Constructed Response 1

Titanium Works manufactures specialized industrial valves for the oil and gas sector. The company uses a standard costing system.

For the month of May, the standard cost card for one industrial valve included:

  • Direct Materials: 10 kg at $15 per kg = $150
  • Direct Labor: 4 hours at $25 per hour = $100

During May, a global supply chain shock caused the market price of the specific titanium alloy used in the valves to spike unexpectedly to $18 per kg. The Purchasing Manager, anticipating further price increases, rushed to buy materials from a new, unvetted supplier at $17.50 per kg.

Actual results for May (production of 1,000 valves):

  • Direct Materials purchased and used: 10,500 kg at $17.50 per kg
  • Direct Labor: 4,200 hours at $26 per hour

The Production Manager claims the extra material usage and labor hours were due to the poor quality of the alloy from the new supplier, which was harder to machine and resulted in more scrap.

Requirements:
(a) Calculate the total material price variance and material usage variance. (4 marks)
(b) Calculate the material price planning variance and material price operational variance. (4 marks)
(c) Discuss the performance of the Purchasing Manager and the Production Manager based on your calculations and the scenario provided. (8 marks)
(d) Evaluate whether standard costing remains a useful performance measurement tool for Titanium Works in a highly volatile global market. (4 marks)

How to approach this question

Step 1: Calculate basic variances using standard formulas. Step 2: Split the price variance into planning (original vs revised standard) and operational (revised standard vs actual). Step 3: Use the variances and the scenario text (poor quality, market shock) to evaluate who is actually responsible. Step 4: Discuss the pros and cons of standard costing when prices change rapidly.

Full Answer

This question tests the ability to calculate advanced variances and, more importantly, interpret them in context. A basic variance analysis would unfairly penalize the Purchasing Manager for a global price shock. By splitting the variance into planning and operational, we see the manager actually beat the new market price. However, performance management is holistic: saving money on price is useless if it destroys production efficiency due to poor quality.

Common mistakes

Failing to link the adverse usage variance to the favorable operational price variance (the classic cheap material/poor quality trade-off).

Practice the full ACCA PM — Performance Management Practice Exam 3

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