1. If a passenger starts at island A and ends at island G, it would cost $10 more for the least expensive trip that includes island F than for the least expensive trip the passenger could take.
The least expensive trip that a passenger can take from Island A to G is through Island D
It will cost $50 from A to D, and it will cost $40 from D to G
Total = 50+40 = 90 --(1)The least expensive trip that a passenger can take from Island A to G via Island F costs $100
If we look at there image, there are 2 routes a passenger can take From A to G via F.
1. A --> C --> F --> G
This route costs 20+60+25 = $105
2. A --> F --> G
This route costs
75 + 25 = $100 ---(2)Since we are looking for the least expensive trip through F, we have to go with the 2nd option.
This 2nd option is $10 more than the least expensive trip the passenger could take.
(2)-(1)100 - 90 = $10
Answer B2.
There are 4 possible islands that a passenger could visit starting at island F and spending no more than $70.We are looking for islands that a passenger could visit from island F, spending no more than $70.
C is $60 away.
G is $25 away.
D is $65 away. (F --> G --> D. 25+40 = $65)
E is $55 away. (F --> G --> E. 25+35 = $55)Apart from these options, to visit other options, a passenger has to spend more than $70.
Answer C