The graph below shows the distance a train traveled over time. According to the graph, at what speed did the train travel?
A.18 Miles per hour
B.30 Miles per hour
C.50Miles Per hour
D.72 Miles per hour

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?