Hoi Chong Transport Ltd operates a fleet of delivery trucks
Hoi Chong Transport, Ltd. operates a fleet of delivery trucks in Singapore. The company has determined that if a truck is driven 178,000 kilometres during a year, the average operating cost is 14.5 cents per kilometre. If a truck is driven only 89,000 kilometres during a year, the average operating cost increases to 16.4 cents per kilometre. (The Singapore dollar is the currency used in Singapore.)
Required:
 1.
 Using the high-low method, estimate the variable and fixed cost elements of the annual cost of truck operation. (Round the \"Variable cost\" to 3 decimal places.)
Solution
Total cost at 178000 kilometers=(178000*0.145)=25810
Total cost at 89000 kilometers=(89000*0.164)=14596
Variable cost per unit=[Total cost at highest level-Total cost at lowest level]/(Highest level-Lowest level)
=(25810-14596)/(178000-89000)=$0.126 per kilometers
Fixed cost=25810-(0.126* 178000)=$3382
2.
Y=a+bX
where a=Fixed cost
while b=Variable cost per kilometer
Hence
Y=3382+0.126X
3.
NOTE:Total fixed cost and variable cost per unit do not change with change in units.
Hence total cost incurred=(3382+0.126X)
=3382+(0.126*99000)=$15856.

