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.
