Answer:
8 hours
Step-by-step explanation:
4/5 because 8/10 is equal to 4/5 which is the simplest form<span />
The degree of a vertex is defined as the number of edges that touch the vertex. The (i, j)-th entry of the adjacency matrix tells you whether vertex i touches vertex j (1 if yes, 0 if no). Then the degree of vertex i is equal to the sum of the i-th row in the adjacency matrix.
• vertex 1 : degree = 0 + 1 + 0 + 0 + 1 = 2
• vertex 2 : degree = 1 + 0 + 1 + 1 + 1 = 4
• vertex 3 : degree = 0 + 1 + 0 + 1 + 0 = 2
• vertex 4 : degree = 0 + 1 + 1 + 0 + 1 = 3
• vertex 5 : degree = 1 + 1 + 0 + 1 + 0 = 3
So, the correct answer is A. 2.
Bus Bs route times will be:
45 mins
90 mins
135 mins
180 mins
Bus As times will be:
20 mins
40 mins
60 mins
...
180 mins.
Therefore 180 mins is the common factor, which is 9pm