Question

On the first day of shooting a movie, a director uses 25% of a film reel. The strip of film left was 150 meters long. What is the standard length on a film reel? * O 325 300 O 200 400

Answer 1

200 meters

Step-by-step explanation:

Let the standard length of the film reel be x

Percentage of film used = 25%

Amount of film reel used = 0.25x

Amount left = 150m

Taking the sum;

0.25x + 150 = x

Collect like terms

0.25x - x = -150

-0.75x = -150

x = 150/0.75

x = 200 meters

Hence the standard length on a film reel is 200 meters