Breakfast Blues
I got an egg for breakfast and I know that it takes 9 minutes to boil the egg. There is a small problem though. I only have a 4 minute egg timer and a seven minute egg timer.
If only I could be as smart as Pythagreous ! Can you help me do the egg ?
If only I could be as smart as Pythagreous ! Can you help me do the egg ?
Labels: mathemagic
posted by Rajesh Lal at
11:50 PM
19 Comments:
Yeah first post!!
Just look at the egg. When it floats, then its done!
heheh..
start both timers.
when the 4min one ends, you have 3 on the 7min one.
restart the 4min one immediately.
when the 7min one ends, you have 1
on the 4min one.
restart the 7min one immediately.
when the 4min one ends, you have 6 on the 7min one.
restart the 4min one immediately.
when the 4min one ends, you have 2 on the 7min one.
put your egg in now.
when the 2 minutes left on the 7 minute one elapse, restart it immediately to total 9 mins... jee that was long winded, can anyone see an easier way?
Here are the steps:
1. Start both timers at the same time (7 on 7, 4 on 4)
2. When the 4 minute timer goes off restart it (3 on 7, 4 on 4)
3. When the 7 minute timer goes off restart it (7 on 7, 1 on 4)
4. When the 4 minute timer goes off restart it again (6 on 7, 4 on 4)
5. When the 4 minute timer goes off, put your egg in, you will have 2 minutes on the 7 minute timer
6. When the 7 minute timer goes off, restart it at 7. TA DAH!
Here's the math:
7 min- 4 min= 3 min
4 min- 3 min= 1 min
7 min- 1 min= 6 min
6 min- 4 min= 2 min
2 min+ 7 min= 9 min
Start both tmiers.
Restart 4m timer when finished, leaving three mins on 7m timer.
Put egg in when 7m timer finishes this leaves 1 mins on 4m timer.
Then just restart the 4m timer when it finishes two more times for another 8 mins of cooking.
Im not sure if this is the best answer but what the heck!
RUN both 7 and 4
7a 4a
7a 4a
7a 4a
7a 4a
reset 4 then run the remaining of 7
7a 4b
7a 4b
7a 4b
reset 7 then start with the remaining of 4
7b 4b
reset 4 and continue 7
7b 4c
7b 4c
7b 4c
7b 4c
reset 4 and continue with 7
7b 4d
7b 4d
NOW you have 2 MINUTES remaining on 4 and a complete 7 minutes
COOK the egg with the remaining of 4 first then run 7 and you will have a 9 minute cooked egg!
or better explanation (I guess)
run 7 twice and run 4 trice simultaneously
7+7=14
4+4+4=12
14-12=2
2+7=9
sheesh...
you have to wait 14 minutes plus 9just to boil an egg??
very impractical..O_o
math really make everything around a bit complicated!!
Use my way and you have your egg 7 mins earlier rayanuki.
7 = 7
4+4 = 8
8-7 = 1
1+4+4 = 9
= Egg ready and eaten while yours is still cooking.
Eat the egg raw.
...or, you could start the 4 minute timer, and when it's halfway done start the 7 minute timer. Ta da! 9 minutes.
Don't use the egg timer? You can use the normal timer, programing it for 9 minutes.
OR
You put the 7 minutes timer. When it ends put immediately the 4 minutes one, when this is half way done, take the egg off, put another one and resume the timer. When those 2 minutes end, put the 7 minutes one.
There you go: 18 minutes and TWO eggs.
OR
Don't eat eggs in the breakfast..
ok you guys are making it harder than it is. Place two minutes on the 4 min timer then place 7 mins on the 7 min timer. when the 7 min timer stops, you start the 4 min timer
or
u place 7 mins on the 7 min timer then when it ends start the 4 min timer then when the timer is half done, u get 9 mins!
Start both timers at the same time and the egg will be done when the 7-minute timer is finished. It would have boiled for 9 minutes.
Set the 4 minute timer to two minutes, then the seven minute timer to seven minutes
I'm sorry but you're all missing the point. egg timers have sand in so you can only measure the full time exactly and not guess at half way, but you CAN turn them back over. so here's what you do. start both at the same time. when the four minute one has finished start it again immediately. when the seven minute one has finished start that one again immediately. when the fourth one has finished again (after 8 minutes), turn the 7 minute timer over. it will have 1 minute of sand in it and so will be empty itself after 1 more minute. egg done!
Um...how bout you just look at your watch? Who uses egg timers with sand in them anyway? If you do, you deserve an overdone egg!
Um...how bout you just look at your watch? Who uses egg timers with sand in them anyway? If you do, you deserve an overdone egg!
hire someone to cook the eggs
buy a new 9min timer :O you cheap bastard lol (no offense ment) AD
I'm way behind on this one but I just discovered it 15 minutes ago.
Fastest way I can find:
Start both timers.
Flip 4 minute when it ends. (3 minutes left on 7 minute.)
When 7 minute finishes put 4 minute on it's side. This leaves 1 minute left on it.
Put the egg in and start 7 minute timer.
When 7 minute ends restart the 4 minute timer.
4 minute ends and egg is done.
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