Question: In making a backward pass through a network, activity L has an activity time of 4 and immediately precedes activities M, P, and T. The

In making a backward pass through a network, activity L has an activity time of 4 and immediately precedes activities M, P, and T. The late start times for activities M, P, and T are 32, 27, and 26, respectively. The late finish times for activities M, P, and T are 39, 37, and 33, respectively. What is the late start time for activity L?

a. 22

b.17

c.13

d.33

e.30

1. What is the optimal solution to the following linear program?

Max 2X+4Y

Constraints: 2X+2Y 20 X+Y 10 X 0 Y 0

Group of answer choices

the program is infeasible

(20,0)

(0, 10)

the solution is unbounded

(10,0)

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