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In: Accounting

Cost estimation – utilities The Karmichaels’ property has single connections and metres for gas and water....

Cost estimation – utilities The Karmichaels’ property has single connections and metres for gas and water. The following information is provided regarding these utilities for the past year.

1.Using the high-low method, determine the liner cost function for both the gas and water costs.

2.Express the combined costs in a single linear cost equation.

3.Write an explanation of the procedure and the information it produces, as well as how this information is useful for cost management, to the Karmichaels.

  Gas Water
  Units Cost $ Units Cost $
January 375 $   343.75 3,500 $ 1,530.00
February 425 $   356.25 3,750 $ 1,612.50
March 550 $   387.50 2,250 $ 1,117.50
April 350 $   337.50 2,000 $ 1,035.00
May 345 $   336.25 1,800 $    969.00
June 420 $   355.00 2,100 $ 1,068.00
July 425 $   356.25 2,750 $ 1,282.50
August 476 $   369.00 2,615 $ 1,237.95
September 510 $   377.50 2,800 $ 1,299.00
October 445 $   361.25 2,975 $ 1,356.75
November 375 $   343.75 3,100 $ 1,398.00
December 315 $   328.75 3,255 $ 1,449.15

Solutions

Expert Solution

Gas Water
Units Cost $ Units Cost $
January 375 $   343.75 3500 $ 1,530.00
February 425 $   356.25 3750 $ 1,612.50
March 550 $   387.50 2250 $ 1,117.50
April 350 $   337.50 2000 $ 1,035.00
May 345 $   336.25 1800 $    969.00
June 420 $   355.00 2100 $ 1,068.00
July 425 $   356.25 2750 $ 1,282.50
August 476 $   369.00 2615 $ 1,237.95
September 510 $   377.50 2800 $ 1,299.00
October 445 $   361.25 2975 $ 1,356.75
November 375 $   343.75 3100 $ 1,398.00
December 315 $   328.75 3255 $ 1,449.15
Variable cost = (Total cost of high activity – Total cost low activity) / (Highest activity unit – Lowest activity unit)
Highest Activity 550 $   387.50 3750 $ 1,612.50
Lowest Activity 315 $   328.75 1800 $    969.00
Variable Cost per unit (378.50-328.75)/(550-315) (1612.50-969)/(3750-1800)
0.21 0.33
Fixed Cost
Total cost = (Variable cost per unit x Units produced) + Total fixed cost
387.50 = (.21*550 units)+ Fixed Cost 1612.50= (.33* 3750 unis +Fixed Cost
387.50 = 116.43 + Fixed Cost 1612.50 = 1237.50 + Fixed Cost
Therefore, Fixed Cost = 387.50-116.43 Therefore, Fixed Cost = 1612.50-1237.50
Total Fixed Cost = 271.06 Total Fixed Cost = 375
Total Cost Equation
(Variable cost per unit * units) + Fixed Cost
(.21*X) + 271.06 (.33*X) + 375

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