a$)$ A flexible pavement section has lost its seal, due to drying, and fine aggregate have raveled. The ride score is $37$ and the skid number is $28.$ Use Tables of pavement repair strategies to determine which repair strategy should be recommended and why?

b$)$ A flexible pavement has been observed to exhibit alligator cracking in the wheel paths $($class B$)$ for approximately $10$ percent of its length. About $20\%$ of the section has been patched. The ride score is $50.$ Use a decision tree analysis to determine the appropriate treatment required. If the ADT on the roadway is $1850$ and cost per mile is $$6000,$ determine the priority ranking of this road section.