A train has 3 passenger cars and each car has 4 columns of seats and each column holds 40 passengers.
If one of the cars has 15 people standing in addition to all of the sitting passengers, and the rest of the cars
are full without anyone standing, how many passengers are on the train?
Which of the following sets of equations correctly represents this situation?
Number of seats per car: 40 ÷ 4 = 10
Total number of seats: 10 × 3 = 30
Number of passengers: 30 + 15 = p
Number of seats per car: 4 × 40 = 160
Total number of seats: 160 × 3 = 480
Number of passengers: 480 − 15 = p
Number of seats per car: 40 ÷ 4 = 10
Total number of seats: 10 × 3 = 30
Number of passengers: 30 − 15 = p
Number of seats per car: 4 × 40 = 160
Total number of seats: 160 × 3 = 480
Number of passengers: 480 + 15 = p