Ratio of 18 seconds to 1 hour:

To find the ratio between 18 seconds and 1 hour, we need to convert both quantities to the same units. In this case, we can convert 1 hour to seconds since both quantities are already in seconds.

Converting 1 hour to seconds:

There are 60 minutes in 1 hour, and each minute has 60 seconds. To convert hours to seconds, we multiply the number of hours by 60 minutes and then by 60 seconds.

1 hour = 1 * 60 minutes * 60 seconds = 3600 seconds

The ratio:

Now that both quantities are in seconds, we can find the ratio. The ratio is a comparison of two or more quantities. In this case, we compare 18 seconds to 3600 seconds.

The ratio of 18 seconds to 1 hour is 18:3600 or simply 1:200.

This means that for every 1 unit of 18 seconds, there are 200 units of 1 hour.

Conclusion:

- The ratio of 18 seconds to 1 hour is 1:200.
- This ratio tells us the comparison between the two quantities, where for every 1 unit of 18 seconds, there are 200 units of 1 hour.