Filling An Empty Cistern

Algebra Level 2

To fill an empty cistern, we can use pipe A which would take 20 minutes, or we can use pipe B which would take 15 minutes, or we can use pipe C which would take 12 minutes.

If we turned on all three pipes, how long will it take to fill up the empty cistern?

Image credit: Wikipedia
×

Problem Loading...

Note Loading...

Set Loading...