The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?
[EX A]: 3 / 28

[EX Q]: Problem: on a certain road , 10 % of the motorists exceed the posted speed limit and receive speeding tickets , but 20 % of the motorists who exceed the posted speed limit do not receive speeding tickets . what percent of the motorists on that road exceed the posted speed limit ?
[EX A]: 12.5 %

[EX Q]: Problem: an empty wooden vessel weighs 8 % of its total weight when filled with paint . if the weight of a partially filled vessel is one half that of a completely filled vessel , what fraction of the vessel is filled .
[EX A]:
3 / 7