The Chambers Manufacturing Company recorded overhead costs of $14,182 at an activity level of 4,200 machine hours and $8,748 at 2,300 machine hours. The records also indicated that overhead of $9,730 was incurred at 2,600 machine hours. What is the variable cost per machine hour using the high-low method to estimate the cost equation?

a. $2,78
b. $2.86
c. $3.10
d. $3.38
e. some other answer

B) $2,86

Explanation:

Using the high-low method we will use the highest activity level and the lowest activity level to determine the variable and fixed portion of the costs.

Highest activity - Cost $ 14182  Hours - 4200

Lowest activity - Cost $ (8748)   Hours - (2300)

Difference        -            $ 5434                 1900

Now we determine the variable portion. 5434/1900 = 2,86

Thus the answer is B.

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