image creditWhile enjoying a fun afternoon sailing on the most lovely lake in the kingdom a spoilt princess realises she has lost a diamond and pearl earing in the water. The princess is extremely upset by the this and implores her father, the king, to do something about it immediately.
The king decides to drain the lake. His engineers tell him that there are three pipes available to do the job. The first will drain the lake in 8 days, the second in 12 days and the third in 24 days. How long will it take to drain the lake if the king uses all 3 pipes at once?
You can find the answer here.
