4.1. Consumables

Try these first

1. 1.

   What are operating costs?

   Hint

   Think about what costs are involved when the machine is idle.

2. 2.

   List two examples of consumables.

   Hint

   Consider parts that are used up during work.

3. 3.

   Which of the following is not considered an operating cost?

   • Fuel
   • Wages
   • Depreciation

   Hint

   Think about which cost happens regardless of use.

4. 4.

   True or False: Operating costs remain constant regardless of equipment usage.

   • True
   • False

   Hint

   Recall the definitions of operating versus ownership costs.

5. 5.

   A contractor reports fuel expenses of $500 after 40 operating hours on rocky terrain. If fuel costs increase by 10% under these conditions, what will be the adjusted fuel cost for the next operating period if hours increase to 50?

   Hint

   Calculate per hour cost and adjust with the increase.

6. 6.

   Estimate how a machine's increased use in unfavorable conditions could elevate total repair costs by 25%. If original repair costs were estimated at $2,000, what will the new estimated repair cost be?

   Hint

   Calculate 25% of original costs and add.