Question

A contractor pays his subcontractors a fixed fee plus mileage for work performed. On a given day the contractor is faced with three electrical jobs associated with various projects. Given below are the distances between the subcontractors and the projects.

	Project A	Project B	Project C
Subcontractor 1	35	45	50
Subcontractor 2	25	40	45
Subcontractor 3	30	20	15
Subcontractor 4	40	35	25

What is the minimum total distance if the jobs are assigned to the subcontractors?

A. 70 Miles

B. 65 Miles

C. 80 Miles

D. 75 Miles

Answer 1

	Project A	Project B	Project C
Subcontractor 1	35	45	50
Subcontractor 2	25	40	45
Subcontractor 3	30	20	15
Subcontractor 4	40	35	25

first select overall lowest distance : 15 (project c, subcontractor 3)

now from, remaming subcontractors and projects :

lowest distance : 25 (project A, subcontractor 2)

now from, remaming subcontractors and projects :

lowest distance : 35 (project B, subcontractor 4)

total distance = 15+25+35 = 75 miles (option D)

(please upvote)