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How do you time 18 minutes with a ten minute sand timer and a ten minute one?
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∙ 12y ago
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∙ 12y ago
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If you have a 5 minute hourglass and an 8 minute hour glass how do you get the sand to equal one minute?
Start both at the same time, flip each when time runs out. The 5 minute will be turned 3 times totalling 15 minutes. The 8 minute will be flipped twice totalling 16 minutes. Once the 15 minutes is up on the 5 minute timers, there is one minute left on the 8 minute timer.
You have 2 sand filled egg timers one for 9 minutes and one for 2 minutes. how can you use both of them to time a 5 minute egg?
you put the 9minute timer and the 2minute timer on together when the 2min timer finishes flip it 2min timer to make 4mins. when the 2min timer is finished start timing the egg and wait for the 9min one to finish :)
How many times must a three-minute timer be flipped to measure a half hour?
1 hour = 60 minutes. Half an hour = 60/2 = 30 minutes. 30 minutes = 30/3 = 10 turns on a 3-minute timer PROVIDED the timer is turned at exactly the right moment and turning the timer takes no time at all.
How do you calculate hours and minutes worked?
To calculate the hours and minutes worked you could simply start a timer when you get to work and stop it when you leave. Do this every day until it is time to turn in your hours and minutes worked. The amount on the timer will be your total.
What time will a clock show after the minute hand has moved 72 degrees?
Angle of 360 degrees = 1 hour = 60 minutes of time so 6 degrees = 1 minute of time so 72 degrees = 12 minutes of time. I have used "minutes of time" as the unit of time to avoid confusion with minute as a unit in which angles are measured (1/60 degree).
If you have two hourglasses one four minute timer and one seven minute timer how can you measure nine minutes?
Start both timers, when the four minute timer is done, there will be 3 minutes of sand left in the top of the seven minute timer.Restart the four minute timer, while letting the remaining (3 minutes) of sand to drop from the 7 minute timer. (this is your 1st 3 minutes of your nine minute measurement)When the 7 minute timer is done the 4 minute timer will now have 3 minutes of sand in the bottom. Flip the 4 minute timer (when this runs it will be your second 3 minutes of time). At the same time flip the 7 minute timer.When the 3 minutes of sand run on the 4 minute timer, restart the 7 minute timer by this time 3 minutes worth of sand will have gone to the bottom of the timer, resetting it will give you the last 3 minutes of sand for you last 3 minutes of time measuring the 9 nine minutes.
How do you get 13 minutes from a 7 minute and a 5 minute eggtimer?
you flip both timers (with all of the sand on one side) and once the five minute timer runs out the first time, you flip the five minute timer. Once the nine minute timer runs out, you flip the five minute timer again. After the five minute timer has run out, it will have been 13 minutes. (5+4+4=13)
If you have a 5 minute hourglass and an 8 minute hour glass how do you get the sand to equal one minute?
Start both at the same time, flip each when time runs out. The 5 minute will be turned 3 times totalling 15 minutes. The 8 minute will be flipped twice totalling 16 minutes. Once the 15 minutes is up on the 5 minute timers, there is one minute left on the 8 minute timer.
You have 2 sand filled egg timers one for 9 minutes and one for 2 minutes. how can you use both of them to time a 5 minute egg?
you put the 9minute timer and the 2minute timer on together when the 2min timer finishes flip it 2min timer to make 4mins. when the 2min timer is finished start timing the egg and wait for the 9min one to finish :)
With a seven-minute sand timer and an eleven-minute sand timer describe a method to time the boiling of an egg for 15 minutes?
start the both of them at the same time, when 3 mins is up there is 4 mins left on the 7 minute timer. so reset the timer and start again. when that finishes that is 11 mins
With a seven minuet and a four minuet egg timer How do you boil an egg for nine minuets?
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.
How many times must a three-minute timer be flipped to measure a half hour?
1 hour = 60 minutes. Half an hour = 60/2 = 30 minutes. 30 minutes = 30/3 = 10 turns on a 3-minute timer PROVIDED the timer is turned at exactly the right moment and turning the timer takes no time at all.
How can a chef use an 11-minute hourglass and a 7-minute hourglass to time vegetables that must steam for 15 minutes?
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.
When was the sand timer invented?
It is unknown when the sand timer, also known as the hourglass, was invented. There are records of sand timers being used as early as the 1300s when they were a preferred timepiece for sailing, as other forms of keeping time were not reliable on the swaying ships.
How you can meaure 3 minute using 7 minute and 11 minute sand clock without using any electric instruments?
Start both sand clocks off at the same time. When the 7-minute clock runs out turn it over. When the 11-minute clock runs out turn it over. START TIMING. When the 7-minute clock next runs out it will have been 3 minutes.
What is the uses of kitchen timer?
As a reminder to do some chore or errand, to time something that is cooking, as an aid to teach children how long 5 or 10 minutes is, to jar you awake from that 15 minute power nap.
What is an experiment to test the heart's recovery rate Step by step instructions please?
Equipment: Bench Timer Method: Record how many times your heart beats in a minute whilst resting. Time five minutes on a timer and press start. Step up and down on the bench for this amount of time. As soon as five minutes is up, sit down and now count how many times your heart beats after exercise. At the end of the minute, if your heart has not returned to it's original heart rate, time another minute. Repeat this until your heart rate returns to your resting heart rate. If it took one minute for your heart beat to return to normal, then your recovery rate is one minute etc. :)
