At a certain school, band and track meet at the same time, so it is impossible for a student to do both. If the probability that a student is doing band is 0.11, and the probability that a student is...

At a certain school, band and track meet at the same time, so it is impossible for a student to do both. If the probability that a student is doing band is 0.11, and the probability that a student is doing track is 0.62, what is the probability that a student does band or track?