# Posts by Steve Mencik

• ## Chapter 4

Option 1 would cause train to leave at 10:30PM and at 300 km/h could not reach destination by midnight.

Option 2 doesn't seem reasonable, as passengers still don't make connection.

Option 3 costs \$12K but passengers make their train

Option 4 costs nothing, and passengers (barely) make the train. 40% of 300 kmh is 120 kmh. with 5.5 hours until midnight, the train can travel 660 km. They only need to go 620 km. So, they just make their connection.

Go with option 4.

• ## Chapter 3

Let punctuality = 1, 2, 3, 4, or 5

Price = \$20, \$40, or \$60, scaled as 3, 2, 1 since lower is better
Quality = 1 (low), 2 (middle), or 3 (best).

Optimum = punctuality times 2*price time 4*quality

Vendor Mecha Heads = 3* 2 * 3 * 4 * 1 = 72

Vendor Swiss Metal = 4 * 2 * 1 * 4 * 3 = 96

Vendor General Machines = 4 * 2 * 2 * 4 * 2 = 128

General Machines is the best overall.

• ## Chapter 2

Q1. 3 no difference

Q2. 4 Scissors

Q3. A

Q4. B

Q5. A

Q6. 3

Q7. 4

Q8. 4

Q9. 1

Q10.2

• ## Chapter 1

Yes.
Trains approaching at combined speed of 280km/h. They will close the 140 km gap in 30 minutes.

Supervisor can cover 14 km in 1 hour or 7 km in 30 minutes. Since he only has to cover 6.3 km in 30 minutes, he will get to the switch on time.

Steve Mencik
COM-202
Loch Ness