Answer: 
Step-by-step explanation:
The first step to solve the exercise is to make the conversion from meters to centimeters.
Since
, then the dimensions of the wood board in centimeters are:

Now, you must find the Greatest Common Factor (GCF). The steps are:
- Descompose 100 and 60 into their prime factors:

- Multiply the commons with the lowest exponents:

Therefore, the side lenght of each square must be:

Assuming the first term in the first equation is actually x^2, then the ordered pair is C. (3, 3).
11:00 P.M.
Bus A would do the route 13 times
Bus B would do the route 12 times