If a student is chosen at random from those surveyed, what is the probability that the student is a boy?

If a student is chosen at random from those surveyed, what is the probability that the student is a boy who participates in school sports?

If you could explain how you get the answer I would greatly appreciate it

If a student is chosen at random from those surveyed what is the probability that the student is a boy If a student is chosen at random from those surveyed what class=