In a 5000 m race, the athletes run 12(1)/(2) laps; each lap is 400m . Kara runs the race at a constant pace and finishes in 17.5 min. Hannah runs the race in a blistering 15.3min, so fast that she actually passes Kara during the race. How many laps has Hannah run when she passes Kara?
The total cost of the ticket is the sum of the base ticket price, p(x) = 15x + 10, and the service charge, c(x) = 5x + 2. Therefore, from the word sum, the operation involved is Addition. This is the first among the choices given.
