A business school gives courses in typing, business, english, transcription, writing and accounting. in how many ways can a student arrange a schedule if 3 courses are taken?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?