What is the resources requirement percentage that should be met?

• A. 20%
• B. 29%
• C. 35%
• D. 50%

Answer: (B)

In maintenance planning, you keep a buffer of resources to cover the uncertainties that can delay work, such as parts availability, tool access, or crew variations. The resources requirement percentage is the portion of the total planned resources you should have as this contingency. The value 29% is the amount recommended in this context because it provides a practical balance: enough cushion to absorb typical delays without tying up too many resources and inflating costs. A smaller cushion, like 20%, may leave you vulnerable to common disruptions; a larger cushion, such as 50%, would unnecessarily lock up resources and raise expenses, while 35% is not the standard used here. Practically, if a task requires 1,000 resource-hours, planning for about 1,290 hours (1,000 + 290) helps keep the schedule on track despite common variances.