Measuring of 9 minutes

qtrthr
By qtrthr

The Puzzle: You need to boil eggs for exactly 9 minutes, or else you will lose your job as head chef.

But you have only 2 Hourglasses, one measures 7-minutes, and the other measures 4-minutes. How can you correctly measure 9 minutes?

By Aisha-Taweela• 29 Jul 2008 15:42
Aisha-Taweela

Use your watch instead.

By SAMAEL• 29 Jul 2008 15:31
Rating: 5/5
SAMAEL

count "1 hippopotamus , 2 hippopotamus" etc till you get to 540 hippopotamus.

Bust open the sand timers and use the sand as ninja distraction devices.

Granted i have never been a chef though.

By abhisheksgh• 29 Jul 2008 15:30
Rating: 5/5
abhisheksgh

start with two fully-charged hourglasses, it only takes nine minutes.

t=0: start both hourglasses and the egg.

t=4: H#4 runs out. Flip it.

t=7: H#7 runs out. Flip it.

t=8: H#4 runs out again. Flip H#7, which now has 1 minute in the top.

t=9: H#7 runs out.

enjoy ur egg.

By donald_duc168• 29 Jul 2008 15:22
Rating: 2/5
donald_duc168

consume the 7minutes hour glass, then use the other one half time

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