If the following jobs are sequenced according to the LPT rule,then the mean tardiness (in days) for all jobs is (assume zero for today's date) 
Definitions:
Net Operating Income
A company's income after operating expenses are subtracted but before deducting interest and taxes, reflecting the profitability from core operations.
Planning Budget
A budget created for a specific level of activity, it helps in planning and controlling costs based on projected operational activities.
Net Operating Income
The profit a company makes from its normal business operations, calculated by subtracting operating expenses from operating revenues.
Planning Budget
An estimate of future income and expenditures that is used as a guideline for financial planning and decision-making.
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