Given the Partial Project Network Below and the Fact That $\ge$

question 14

Essay

Given the partial project network below and the fact that F can be crashed three times if x_t = start
time of Activity i, and y_i = amount of crash time used for Activity i.
a. Which of the following is correct? x_F $\ge$ x_D + 10 - y_D or x_F $\ge$ x_E + 10 + y_E or y_D, y_E $\le$ 0 or x_F -x_D - x_E + 10 $\ge$ 3
b. Which of the following is correct? y_D $\le$ 3 or y_E $\le$ 3 or y_F = y_D + y_E or y_F $\le$ 3

---

Definitions:

Operating Costs

Expenses associated with the day-to-day functioning of a business, such as rent, utilities, and payroll, excluding costs related to production.

Annual Cost

The total expenses associated with maintaining or operating something over the course of a year.

Useful Life

The estimated period over which a fixed asset is expected to be useful to the owning entity, crucial for calculating depreciation.

Machine

Equipment or devices designed to perform specific tasks, often used in manufacturing and production processes.