Which statement is correct about total ownership costs and their timing in the life cycle?

Which statement is correct about total ownership costs and their timing in the life cycle?

• A. 10-20% occur late in life cycle.
• B. 40-60% occur late in life cycle.
• C. 65-80% of the total ownership costs occur late in the life cycle, due to operations and support.
• D. 100% occur late in the life cycle.

Answer: (C)

Total ownership costs include acquisition plus all costs incurred over the life of the asset, especially during operations, maintenance, and support. The key idea is that the purchase price is just the beginning; the ongoing costs accumulate and often dominate the total cost. For many systems, a large share—roughly two-thirds to four-fifths—occurs during the Operations and Support phase, late in the life cycle, due to routine maintenance, parts, labor, downtime, and logistics. That’s why the statement that 65-80% of total ownership costs happen late, driven by operations and support, is the best description. The alternatives underestimate this late-life share or claim everything occurs late, which isn’t accurate because some costs are incurred early at acquisition. In practice, this emphasizes planning and budgeting for long-term O&S rather than focusing only on upfront costs.

Total ownership costs include acquisition plus all costs incurred over the life of the asset, especially during operations, maintenance, and support. The key idea is that the purchase price is just the beginning; the ongoing costs accumulate and often dominate the total cost. For many systems, a large share—roughly two-thirds to four-fifths—occurs during the Operations and Support phase, late in the life cycle, due to routine maintenance, parts, labor, downtime, and logistics. That’s why the statement that 65-80% of total ownership costs happen late, driven by operations and support, is the best description. The alternatives underestimate this late-life share or claim everything occurs late, which isn’t accurate because some costs are incurred early at acquisition. In practice, this emphasizes planning and budgeting for long-term O&S rather than focusing only on upfront costs.