At a football stadium it takes one hour for the spectators to get in if 6 gates are used. How long will it take them to get in if 3 gates are opened

It is impossible to determine how long it will take for the spectators to get in with 3 gates opened without more information about the capacity of the stadium, the number of spectators, and the flow rate of the spectators entering through each gate.

If it takes one hour for the spectators to get in using 6 gates, we can assume that the rate of entry is the same for each gate.

Using this information, we can calculate the time it will take for the spectators to get in if only 3 gates are opened.

Let's say the rate of entry for each gate is "x spectators per hour."

If 6 gates were used, then the total rate of entry would be 6x spectators per hour.

Therefore, we can set up the following equation:

6x = 1

To find the rate of entry per gate, we can divide both sides of the equation by 6:

x = 1/6

Now, if we only open 3 gates, the total rate of entry would be 3 times the rate per gate:

3 * (1/6) = 3/6

Simplifying, we find that the rate of entry for each gate is 1/2 spectators per hour when 3 gates are opened.

Therefore, it would take the spectators 2 hours to get in if only 3 gates are opened.