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Number Puzzle #43- Six Minutes -

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Puzzle Image
You want to measure exactly 6 minutes from the moment you touch an hourglass using only a 4-minute hourglass and a 5-minute hourglass. How many times do you have to flip over an hourglass?

4-Minute Hourglass (minutes remaining) 5-Minute Hourglass (minutes remaining) Elapsed Time (minutes)
- - 0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Do you have a suggestion for this puzzle (e.g. something that should be mentioned/clarified in the question or solution, bug, typo, etc.)?
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