the standard length of a film reel id 300. on the first day of shooting a movie, a director uses 30% of the film on one reel. How long is the strip of film that was used
To find the percent of something, you should multiply it by it's decimal value. In this case, 30% can be represented by 0.3. Knowing that, you can multiply 300*.3 and get 90. Therefore, the director has used 90 units of the strip of film.
