The number of pictures in a movie that is 90 minutes long is 129600 pictures
Solution:
Given that motion picture camera at normal speed takes 24 pictures per second
To find: number of pictures in a movie that is 90 minutes long
From given question,
1 second = 24 pictures
We have to find for 90 minutes
We know that,
1 minute = 60 seconds
Therefore, convert 90 minutes to seconds
1 x 90 minute = 60 x 90 seconds = 5400 seconds
Therefore, now find the number of pictures in a movie that is 5400 seconds long
1 second = 24 pictures
5400 seconds = 5400 x 24 pictures = 129600 pictures
Thus number of pictures in a movie that is 90 minutes long is 129600 pictures
