Question

Mabel spend four hours editing a three minute long video. She edits at a constant rate. How long will it take Mabel to edit a nine minute video.

Answer 1

12 hours

Explanation:

since she is working at a constant rate of 4 hours for every 3 minutes and video is 9 minutes 9/3 is 3 and 4x3=12

Answer 2

12 hours.

Explanation:

∵ Mabel spend time in editing a 3 minutes long video = 4 hours

∴ Mable will take time to edit a 1 minute long video =
`(4)/(3)` hrs.

She edits at a constant rate.

She will take time to edit 9 minutes long video =
`(4)/(3)* 9`

=
`(36)/(3)`

= 12 hours

It will take 12 hours to edit a 9 minutes long video.