It would help if the question made sense!
I would use my watch, or the timer function of my microwave. Or you can start both timers at the same moment, before putting the egg in the water. When the 3-minute timer ends, put the egg in. This leaves 2 minutes on the 5-minute timer, assuming both timers are relatively accurate. When the 5-minute timer ends, re-set it again for 5 minutes, and you will have your 7 minute egg when the timer ends.
Three minutes = 180 seconds.
Use the fact that 4 and 7 have no common prime factors. If you run both timers at the same time, restarting each one whenever it rings, then sooner or later the seven-minute timer will go off two minutes after the four-minute timer did - and then you're in business. In detail: m0: start both timers m4: timer 4 rings, restart it m7: timer 7 rings, restart it m8: timer 4 rings, restart it m12: timer 4 rings, start cooking the egg m14: timer 7 rings, restart it m21: timer 7 rings, take out the egg. The egg went in at minute 12 and came out at minute 21 - nine minutes of cooking. This works because the 7-minute timer rang two minutes after the 4-minute timer did; the seven-minute timer times the last stretch. You can also make the 4-minute timer time the last stretch, and this is actually quicker (I just realized): m0: start both timers m4: timer 4 rings, restart it m7: timer 7 rings, put in the egg m8: timer 4 rings, restart it m12: timer 4 rings, restart it m16: timer 4 rings, take out the egg The egg went in at minute 7 and came out at minute 16, which means it cooked for nine minutes.
Got a really long way to do it:1) start both timers at the same time.2) when the 3 minute one runs out lay the 5 minute one on its side to stop it (this gives you 2 mins left in 5 min one).3) start the 3 min one at the same time as turning the 5 min back up to finish the remaining 2 mins.3) when the 5 min one has finished its 2 mins, turn the 3 min on on its side (leaving 1 min one side and 2 mins the other)4) finally you can then use the 5 min one completely, then once that runs out, turn the 3 min one so the most sand is at the top- giving you 2 mins, and 7 mins in total. Phew!or:buy a watch!
A stopwatch or a timer would be suitable to measure the time it takes to bring water to a boil.
Sixty seconds equals one minute. It takes about one minute to boil a cup of water in the microwave.
You have two hour glass: 11 minutes and 7 minutes.Problem, time an egg cooking for fifteen minutes.Step 1. Put water on to boil, as you want the water boiling when you cook an egg.Step 2. Start both the 11 and the 7 minute timersStep 3. When the seven minute timer runs out, you still have four minutes left on the eleven minute timer (11-7=4). Put the Egg in the water now and wait four minutes.Step 4. When the eleven minute timer runs out (the egg has been in the water for four minutes), turn it over and wait till it runs out again.Step 5. When the eleven minute timer runs out the second time the egg is done.4 minutes + 11 minutes = 15 minutes.Step 6. Run the egg under cold water for a minute to cool the shellStep 7. Peel egg and cut into quarters, lightly salt to taste.Step 8. Enjoy eating your hard boiled egg.
Boil water for at least one minute to effectively kill germs.
Water needs to boil for at least one minute to effectively kill bacteria.
it take orange juice 3 weeks
Boil it for about one minute and the skin should peel right off
No you cannot boil an egg with a cell phone.