Murder Break
11 years ago
"A bell rings every 2 hours, a second bell rings every 3 hours, and a third bell rings every 4 hours. If all 3 bells ring at 9:00 AM., at what time will all 3 bells next ring?"
latest #45
Murder Break
11 years ago
watch and be amazed as i sit here all day calculating this
Murder Break
11 years ago
I DON'T WANNA HIT "VIEW ANSWER" UNTIL I THINK I'VE GOT IT
sosogomi
11 years ago
I wanna say it's going to be about 1pm but the language of the problem seems like a trap
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Murder Break
11 years ago
1PM isn't one of the choices. It's either noon, 9PM, 6PM, 10PM, or "not enough information is given"
✠ ℘uяεβLooD ✠ says
11 years ago
9pm
✠ ℘uяεβLooD ✠ says
11 years ago
at least that's what I solved <.<?
Murder Break
11 years ago
I feel like it should be 9PM?
✠ ℘uяεβLooD ✠ says
11 years ago
yeah
Murder Break
11 years ago
But that seems like it's too easy. Like, all of them divide cleanly into 12, but not at the same rate. So, eventually they should probably ring again together at 9PM
✠ ℘uяεβLooD ✠ says
11 years ago
cause the only number divisible by all three numbers is 12
Murder Break
11 years ago
but idk if that'll be the next time. And I think I've calculated a month's worth of days trying to work this out manually.
✠ ℘uяεβLooD ✠ says
11 years ago
that's the lowest one... and 9pm is 12 hours after the first bell
Murder Break
11 years ago
It's probably 9PM or noon. . . . I WANNA KEEP WORKING AT IT TO SEE IF I CAN HIT IT MANUALLY but if I fill this page with numbers first I'll just go with 9PM and see if it's right lol
Murder Break
11 years ago
I've already filled about half a page after all ukjuhfkua
Murder Break
11 years ago
(the closest I've hit, for the record, is the first and last bell ring together on one 9AM, but the middle bell rings at 9PM (屮 )屮 彡 ┻━┻
(ノ・_・)ノ 彡 ┻━┻
✠ ℘uяεβLooD ✠ says
11 years ago
do you have to follow a certain formula?
Murder Break
11 years ago
:|a No? All that was given was what I put in the initial plurk. I'm just going from 9AM and adding each number on a separate line.
Murder Break
11 years ago
Like:
9+2=11=113=15
9+3=12=15=18
9+4=13=17=21
etcetc
✠ ℘uяεβLooD ✠ says
11 years ago
I could help
✠ ℘uяεβLooD ✠ says
11 years ago
and that formula your using is right
✠ ℘uяεβLooD ✠ says
11 years ago
you just have to continue the first two lines
Murder Break
11 years ago
which is taking forever lol the first rule we're gievn when practicing tests like this is "don't take more than a minute on a problem" but I've been at this for at least 10.
Murder Break
11 years ago
Well we're not trying to get to 21, we're trying to see at what point they all make the same number again :|a
✠ ℘uяεβLooD ✠ says
11 years ago
but that's it
✠ ℘uяεβLooD ✠ says
11 years ago
21 is 9pm right?
Murder Break
11 years ago
Yep! . . .WAIT WOW I FEEL DUMB
✠ ℘uяεβLooD ✠ says
11 years ago
after 6 rings, the first bell hits 9pm
Murder Break
11 years ago
i worked way too hard for an answer that's right in my face lik ethat
Murder Break
11 years ago
/o\
✠ ℘uяεβLooD ✠ says
11 years ago
after 4 rings the 2nd bell hits 9pm... and after 3 rings, 3rd bell hits 9pm
✠ ℘uяεβLooD ✠ says
11 years ago
oooooooooooooh
✠ ℘uяεβLooD ✠ says
11 years ago
<.<
Murder Break
11 years ago
Yeah but not with the others. What we're solving for is all the bells ringing at once lol
✠ ℘uяεβLooD ✠ says
11 years ago
ah
✠ ℘uяεβLooD ✠ says
11 years ago
well yeah, at 9pm, all 3 will ring
Murder Break
11 years ago
But if the only times they have in common, if not together, is 9 and 21/9pm. /o\ Duh self duh
✠ ℘uяεβLooD ✠ says
11 years ago
yep, that's the only time
✠ ℘uяεβLooD ✠ says
11 years ago
because the only think you can divide by all three numbers would be 12
✠ ℘uяεβLooD ✠ says
11 years ago
so it would only happen every 12 hours
✠ ℘uяεβLooD ✠ says
11 years ago
math nerd
𝔂𝓾𝓶𝓲
11 years ago
I also got 9 pm. Your reasoning makes sense on top of it, you two.
ღJunebug
11 years ago
if four bells ring in the tower of bray...
at rest.
11 years ago
I hope you guys get the right answer! :-D /will not touch that problem unless promised due reward lol
✠ ℘uяεβLooD ✠ says
11 years ago
aaaaaaaaaaaaw
✠ ℘uяεβLooD ✠ says
11 years ago
yeah, I tried to solve it... nerdy otousan
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