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There are multiple routes to reach from node 1 to node 2, as shown in the network.

The cost of travel on an edge between two nodes is given in rupees. Nodes ‘a’ ‘b’, ‘c’, ‘d’, ‘e’ and ‘f’ are toll booths. The toll price at toll booths marked ‘a’ and ‘c’ is Rs. 200. and is Rs. 100 for the other toll booths. Which is the cheapest route from node 1 to node 2?
  • a)
    1-a-C-2
  • b)
    1-b-2
  • c)
    1-f-b-2
  • d)
    1-f-e-2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
There are multiple routes to reach from node 1 to node 2, as shown in ...
• Cost of 1-a-C-2 : 200 + 200 + 100 + 100 + 100 = 700
• Cost of 1-b-2 : 300 + 100 + 200 = 600 
• Cost of 1-f-b-2 : 100 + 100 + 100 + 200 = 500
• Cost of 1-f-e-2 :100 + 100 + 100 + 200 + 200 = 700
Hence, 1-f-b-2 is having minimum cost.
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There are multiple routes to reach from node 1 to node 2, as shown in the network.The cost of travel on an edge between two nodes is given in rupees. Nodes ‘a’ ‘b’, ‘c’, ‘d’, ‘e’ and ‘f’ are toll booths. The toll price at toll booths marked ‘a’ and ‘c’ is Rs. 200. and is Rs. 100 for the other toll booths. Which is the cheapest route from node 1 to node 2?a)1-a-C-2b)1-b-2c)1-f-b-2d)1-f-e-2Correct answer is option 'C'. Can you explain this answer?
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