Yvonne paid $18.72 for 8 gallons of gas. She then passed by another gas station
advertising it for $2.29 per gallon. How much
money would she have saved if she had
waited and purchased it at the other location?

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?