Forums › CIMA Forums › Relevant Costing – Accept or Reject decisions
- This topic has 7 replies, 4 voices, and was last updated 7 years ago by  Cath. Cath.
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- December 2, 2017 at 11:55 pm #419824I came across the following question. Please help. A single product firm working at full capacity has following data; 
 Production & sales for the year – 20000 units
 Machine capacity available and fully utilised – 40000 hrs
 Per units data;
 VC $8.20
 FC $1.30
 Selling price $12.50An order for 3000 modified units which requires 6600 of machine hrs was received with a additional material cost of $1 per unit. The decision to accept or reject should be taken at the price; 
 A. $41,790
 B. $40,500
 C. $27,600
 D. $17,190The answer according to my calculations is $44,250. Following are my workings; 
 VC per machine hr – (8.2×20000)/40000= $4.10
 Contribution per machine hr – {(12.5-8.2)x20000}/40000= $2.15
 Addition material cost per unit = $1Therefore the relevant cost is; 
 VC – $4.10×6600 = $27,060
 Contribution foregone – $2.15×6600 = $14,190
 Additional Material – 1×30000 = $3,000
 Total relevant cost (min price) = $44,250Please clarify. Thank you. December 7, 2017 at 11:47 pm #421763I have to say – I do agree with your workings and logic. Possibly the question has a bit missing in it – or there is a mistake in the possible options? This happens from time-to-time – don’t let it put you off – your understanding of the topic is ok in my opinion. December 12, 2017 at 11:51 pm #422803Thank you so very much. December 18, 2017 at 12:38 pm #423915You’re welcome January 24, 2018 at 5:11 am #432556In a real exam I would come to an aswer this way. 
 1) Contribution forgone: 6 600 hours / 2 hours per unit = 3 300 units could be produced in normal course of business. 3 300 * ($12.5 – $8.2) = $ 14 190.
 2) Additional material: 3 000 * $1 = $3 000.
 3) VC: 3 000 * $8.2 = $ 24 600 (steps 2 and 3 can be combined: 3 000 * $9.2 = $ 27 600).So I would choose option A – $41 790 ($14 190 + $27 600 = $41 790). Regards, 
 YRBJanuary 27, 2018 at 12:50 am #433310Hi yes apologies. I’ve seen quite a few errors in questions recently -I assumed too quickly that this was one! 
 The only small error that amithrad has made in his workings is to apply the variable cost on an hourly basis rather than a per unit basis.
 Variable cost of making the special order items would be 8.20 x 3000 units =$24600 then adding on the $1 for modifying each unit makes 1 x3000=$3000)
 The lost contribution is worked out in hours and was correct as stated 6600 x 2.15 = 14190…
 All together these figures come to $41790
 Answer A.May 19, 2018 at 11:03 pm #452895why is profit not considered as a relevant cost May 20, 2018 at 4:39 pm #453001Im not quite sure what you mean? The contribution forgone is included? The question is basically asking for the minimum contract price – which will be the sum of all relevant costs incurred by the contract. 
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