The photo album is completely occupied by a 4.7 GB DVD. How long will it take

The photo album is completely occupied by a 4.7 GB DVD. How long will it take to view all the photos if it takes 5 seconds to view one photo and each photo is 500KB?

First, let’s find out how much memory is in a DVD disc in kilobytes. We need to convert 4.7 gigabytes to kilobytes.

In 1 gigabyte, 1024 megabytes, in 1 megabyte, 1024 kilobytes.

1.) 4.7 * 1024 we find out that there are 4812 megabytes in the disk.

Now we need to convert megabytes to kilobytes.

2.) 4812 * 1024 is exactly 4927488 kilobytes in DVD disc.

Now let’s find out how many 500 kilobytes photos will fit on the disk.

3.) 427488: 500 = 9854 photos are on the DVD.

Now we just find out the time spent watching.

4.) 9854 * 5 = 49270 seconds or 13 hours and 36 minutes.