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Re: Mathematicians of LMAD

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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 12:56 PM
Please help me with this problem, I've tried algebrising it but I'm still not succeeding. The problem is:

The ratio of black counters to red counters in a box is 3:4. A pupil picks out two counters and the probability that they are different colours is 32/63. How many counters were in the box?
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Subtleties is online. Subtleties
Joined: 02 Sep 2011
Total Posts: 19435
18 Jan 2017 12:57 PM
i only know pre-k math sorry


~Sub
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TheFugees is not online. TheFugees
Joined: 03 Sep 2012
Total Posts: 3194
18 Jan 2017 12:57 PM
Idk, probably 5
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 12:59 PM
Come on, I know there are some pretty good mathematicians here, where have you all gone????
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woof67 is not online. woof67
Joined: 22 Dec 2007
Total Posts: 7482
18 Jan 2017 01:01 PM
wouldnt the amount of counters in the box be irrelevant as long as the ratio is 3:4?


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iiFreeSpirit is not online. iiFreeSpirit
Joined: 11 Mar 2012
Total Posts: 4024
18 Jan 2017 01:01 PM
So there were 63 in total???????
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Hines_DCXXI is not online. Hines_DCXXI
Joined: 09 Dec 2010
Total Posts: 23278
18 Jan 2017 01:01 PM
27 maybe


♏Hines621Jr|HinesXV|KobDog|devHines♏
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:02 PM
Nvm, I literally just got it now
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iiFreeSpirit is not online. iiFreeSpirit
Joined: 11 Mar 2012
Total Posts: 4024
18 Jan 2017 01:03 PM
What is it
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Hines_DCXXI is not online. Hines_DCXXI
Joined: 09 Dec 2010
Total Posts: 23278
18 Jan 2017 01:03 PM
what was it


♏Hines621Jr|HinesXV|KobDog|devHines♏
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:03 PM
The answer is 28
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Hines_DCXXI is not online. Hines_DCXXI
Joined: 09 Dec 2010
Total Posts: 23278
18 Jan 2017 01:04 PM
I WAS CLOSE

thought it out in my head smh


♏Hines621Jr|HinesXV|KobDog|devHines♏
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iiFreeSpirit is not online. iiFreeSpirit
Joined: 11 Mar 2012
Total Posts: 4024
18 Jan 2017 01:05 PM
Is this algebra 2
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:05 PM
Lmao you guessed though, 27 is not close to 28, there are an infinite amount of numbers between 27 and 28 :P
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:06 PM
nah just a problem my teacher gave me
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Hines_DCXXI is not online. Hines_DCXXI
Joined: 09 Dec 2010
Total Posts: 23278
18 Jan 2017 01:06 PM
what makes you think i guessed????

i divided the original numbers and the probability it gave you and i was just one off because i did some adding in my head


♏Hines621Jr|HinesXV|KobDog|devHines♏
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:07 PM
the word "maybe" suggested you were unsure which has connotations of guessing
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Hines_DCXXI is not online. Hines_DCXXI
Joined: 09 Dec 2010
Total Posts: 23278
18 Jan 2017 01:08 PM
didn't guess

attempted to help u genuinely


♏Hines621Jr|HinesXV|KobDog|devHines♏
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ColdArmada is not online. ColdArmada
Joined: 24 Feb 2016
Total Posts: 632
18 Jan 2017 01:10 PM
thanks, appreciate it
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