Question

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

Answer 1

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.

Answer 2

30% of 300

= 30/100 * 300

= 30 * 3

= 90

Film used = 90 meters.