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## Explanation

- What fraction of an hour is a second.

There are 60 seconds in 1 minute and 60 minutes make 1 hour.

Therefore, one hour has “60 x 60 = 3600 sec”.

This clearly indicates 1 second is 1/3600 fraction of an hour.

## To Find

Fraction of an hour = ?

## Solution

1 min = 60 sec

1 hour = 60 min

1 hour = 60 x 60 sec

1 hour = 3600 sec

1 sec = **1/3600 hour answer**

## Conclusion

1/3600 fraction of an hour is a second.