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GATRA,the Greater Attleboro-Taunton Regional Transit Authority serves six cities (City 1-City 6).While there are many restrictions (primarily roads on which they may not travel),they do have some choice of routes.The distances between cities,along permitted routes,are presented below.
-What is the shortest route?
A)1-3,3-5,5-6
B)1-2,2-3,3-4,4-5,5-6
C)1-3,3-4,4-5,5-6
D)1-2,2-3,3-5,5-6
E)None of the above

Question

The following information is to be used for the questions below:
GATRA,the Greater Attleboro-Taunton Regional Transit Authority serves six cities (City 1-City 6).While there are many restrictions (primarily roads on which they may not travel),they do have some choice of routes.The distances between cities,along permitted routes,are presented below. 
-What is the shortest route?
A)1-3,3-5,5-6 
B)1-2,2-3,3-4,4-5,5-6 
C)1-3,3-4,4-5,5-6 
D)1-2,2-3,3-5,5-6 
E)None of the above

Quizplus · Accepted Answer

The shortest route from City 1 to City 6 is 1-3, 3-4, 4-5, and 5-6 which has a total distance of 31 miles. Option A includes City 2 which is not on the shortest path. Option B includes unnecessary stops at City 2 and City 4 which increases the total distance to 40 miles. Option D includes a longer route from City 3 to City 5 which increases the total distance to 33 miles. Therefore, the best choice is option C.

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