23 Jul '07 18:22>
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
Originally posted by mossman05Turn over both hourglasses to start. When the 7-minute glass runs out, there will be 4 minutes left in the 11-minute glass. Turn the 11-minute glass over and start cooking the egg, and then turn it over again once the 4 minutes have run out. The total cooking time will be 15 minutes, and the total time will be 22 minutes.
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
Originally posted by PBE6turn both glasses over...start the egg. When the 7 minute glass runs out turn the 7 minute glass over. when the 11 minute runs out, turn the 7 minute back over. When the 7 minute runs out, eat your egg..
Turn over both hourglasses to start. When the 7-minute glass runs out, there will be 4 minutes left in the 11-minute glass. Turn the 11-minute glass over and start cooking the egg, and then turn it over again once the 4 minutes have run out. The total cooking time will be 15 minutes, and the total time will be 22 minutes.
Originally posted by uzlessEDited out.
turn both glasses over...start the egg. When the 7 minute glass runs out turn it over. when the 11 minute runs out, turn the 7 minute back over. When the 7 minute runs out, eat your egg..
7+4+4=15
you get to eat your egg 7 minutes sooner than pB6's 😉
Originally posted by mossman05Why in hell would you cook an egg for 15 minutes when it's done after three?
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
Originally posted by wolfgang59Hmmm, good point.
Depends where the egg came from and what temperature the water is.
Ostrich eggs take up to an hour to soft boil.
For the BBC Chef Competition 'The Great British Menu' top chef Sat Bains cooked his duck eggs for something like 6 hours!! (The water was kept at a constant 30 Centigrade)