4 students where is scheduled to give book reports in 1 hour. After the first report 2/3 hour remaind. The next two reports took 1/6 hour and 1/4 hour. What fraction of the hour remained?

First we need to work out how long each report took to write.

First report = 1/3 hour

Second report = 1/6 hour

Third report = 1/4 hour

Then we need to find multiple of 3,4 and 6. Which is 12 because all of these numbers can make 12.

First report = 4/12

Second report = 2/12

Third report=3/12

If we add them all together this makes 9/12.

To find what fraction of an hour is left we take 9/12 away from 12/12.

This equals 3/12 hour.

If your specifically asked to give it in the simplest form you need to find a common factor that can divide the whole fraction down. In this fraction you can choose the number 3. If you divide this down.

Your answer is 1/4 of an hour left.

When adding fractions you need a common denominator so lets look at what "fractions" we are dealing with:2/3 1/6 and 1/4.