The Application of Relevant Costs To The Decision Accept or Reject A Special Order
Return: Study of Management, Economic and Bussines, Vol. 2(3), March 2023
furthermore magnitude cost variable per ton (b) can be determined through the formula as
follows:
b = n ΣXY – ( ΣX) ( ΣY)
n ΣX
2
– ( ΣX)
2
b = 12 (46,149, 51 3,889, 5 34,000) - (1,792,703) (51,485,956,000)
12 (1.6 09.199197.625) - (1.792.703)
2
b = 553,794,166,674,408,000 – 92,299,027,779,068,000
19,310,390,371, 500 – 3,213,784,046,209
b = 461,495,138,895,340,000
16,096,606,325,291
b = 28,670.34
Whereas value a can be determined through the calculation following this:
a = ∑Y – b ∑X
n
a = 51,485,956, 000 – 28,670.34 (1,792,703)
12
a = 51,485,956,000 – 51,397,400,375.21 _
12
a = IDR 7,379,635.40
With thereby so linear trend equation is :
Y = 7,379,635.40 + 28,670.34 (X)
Then separation semi-variable costs can be determined as follows:
Cost fixed (a) = 88,555,624.79
( 7,379,635.40 x 12 months )
Cost variable (b) = 51,397,400,375.21
(28,670.34 x 1,792,703) (+)
Total cost = 51,485,956,000
Table 5
Production Volume Regression With Factory Electricity Costs
PT Semen Bosowa Maros, 2014
Source: Results of Processed Data
Based on Table data 5 above so magnitude cost variable (b) is countable as follows:
b = n ΣXY – ( ΣX) ( ΣY)
n ΣX
2
– ( ΣX)
2
b = 12 (151,160,206,935,996,000) - (1,792,703) (168,639,431,000)
12 (1.6 09,199,197,625) - (1,792,703)
2
b = 1,813,922,483,231,960,000 - 302,320,413,871,993,000
19,310,390,371,500 – 3,213,784,046,209
b = 1,511,602,069,359,960,000
16,096,606,325,291
b = 93.908
Whereas value a can be determined through the calculation following this:
a = ∑Y – b ∑X
n