AMPL experiment. In the circuit board model of Problem 11-9, the input data are usually given in terms of the (x, y)-coordinates of the holes rather than the distance between the respective holes. Specifically, consider the following (x, y) coordinates for a 9-hole board:

Hole (x, y) in mm 1 (1, 2)

2 (4, 2)

3 (3, 7)

4 (5, 3)

5 (8, 4)

6 (7, 5)

7 (3, 4)

8 (6, 1)

9 (5, 6)

The drill always traverses the shortest distance between two successive holes.

(a) Modify the data file to determine the optimum drilling tour using the (x-y) coordinates.

(b) Determine the production rate in boards per hour given that the drill moving speed is 5 mm/sec and the drilling time per hole is .5 sec. Use files amplCut.txt and solutionCut.txt.