Number Puzzle #25- Nine Minute Egg -

Share this page on:

How can you boil an egg for exactly nine minutes with only a 4-minute hourglass and a 7-minute hourglass to measure the time?

You can use the table below to track the remaining time in each hourglass.

4-Minute Hourglass (minutes remaining)	7-Minute Hourglass (minutes remaining)	Elapsed Time (minutes)
-	-	0

See Answer

Do you have a suggestion for this puzzle (e.g. something that should be mentioned/clarified in the question or solution, bug, typo, etc.)?

<- Previous puzzle | Next puzzle ->

Click here to return to the list of puzzles