Scarlett was a spectator at her town's air guitar competition. Contestants were allowed to play either the acoustic or electric air guitar, but not both. Scarlett recorded which type of
guitar each contestant played. She also counted the number of contestants wearing different
kinds of pants, as there were some interesting stylistic choices.
The probability that a contestant played an acoustic guitar is 0.11, the probability that a
contestant was dressed in velvet is 0.46, and the probability that a contestant played an
acoustic guitar and was dressed in velvet is 0.07.
What is the probability that a randomly chosen contestant played an acoustic guitar or was
dressed in velvet?