Qn This yr, the output is 5000 units and the overhead cost is £31000 3 yrs ago, the ouput was 2000 units and the overhead cost was £8800 The price index was 132 three yrs ago and is 164 this yr.
Using the high- low method, what is the variable cost per unit expressed in current yr prices?
You have made two mistakes. First you need to restate the cost 3 years ago in current year prices. So 8,800 x 164/132 = 10933
Then you use high/low as normal: (31000-10933) / (5,000 – 2,000) = $6.69 (you have put +’s instead of -‘s, and for some reason you have put 7,000 instead of 5,000)