|
| 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? |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 12:57 PM |
i only know pre-k math sorry
~Sub |
|
|
| Report Abuse |
|
|
TheFugees
|
  |
| Joined: 03 Sep 2012 |
| Total Posts: 3194 |
|
| |
|
|
| 18 Jan 2017 12:59 PM |
| Come on, I know there are some pretty good mathematicians here, where have you all gone???? |
|
|
| Report Abuse |
|
|
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?
|
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:01 PM |
| So there were 63 in total??????? |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:01 PM |
27 maybe
♏Hines621Jr|HinesXV|KobDog|devHines♏ |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:02 PM |
| Nvm, I literally just got it now |
|
|
| Report Abuse |
|
|
| |
|
|
| 18 Jan 2017 01:03 PM |
what was it
♏Hines621Jr|HinesXV|KobDog|devHines♏ |
|
|
| Report Abuse |
|
|
| |
|
|
| 18 Jan 2017 01:04 PM |
I WAS CLOSE
thought it out in my head smh
♏Hines621Jr|HinesXV|KobDog|devHines♏ |
|
|
| Report Abuse |
|
|
| |
|
|
| 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 |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:06 PM |
| nah just a problem my teacher gave me |
|
|
| Report Abuse |
|
|
|
| 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♏ |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:07 PM |
| the word "maybe" suggested you were unsure which has connotations of guessing |
|
|
| Report Abuse |
|
|
|
| 18 Jan 2017 01:08 PM |
didn't guess
attempted to help u genuinely
♏Hines621Jr|HinesXV|KobDog|devHines♏ |
|
|
| Report Abuse |
|
|
| |
|