one out of every three seats on an aiplane is empty. There are 72 passengers on the plane. How many empty seats are there on the airplane?

(1/3) * 72 = 72/3 = 24

24

36 To find the number of empty seats on the airplane, we first need to determine the total number of seats. Since every third seat is empty, we can calculate the total number of seats using the given information.

Let's assume there are 'x' total seats on the airplane. According to the given information, one out of every three seats is empty. This means two out of every three seats are occupied.

Therefore, we can say that 2/3 of the total seats are occupied by passengers. We can represent this as the equation: (2/3) * x = 72, where 'x' represents the total number of seats.

To find 'x', we need to solve this equation for 'x'.

Multiplying both sides of the equation by (3/2) will help us isolate 'x'.
(3/2) * (2/3) * x = (3/2) * 72
x = (3/2) * 72
x = 108

So, there are 108 total seats on the airplane.

To find the number of empty seats, we can subtract the number of passengers from the total number of seats.
Empty seats = Total seats - Passengers
Empty seats = 108 - 72
Empty seats = 36

Therefore, there are 36 empty seats on the airplane.