Question

A motion picture camera at normal speed takes 24 pictures per second. How many pictures are in a movie that’s 90 minutes long??

Answer 1

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