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April 18, 2014

April 18, 2014

Posted by **Nick** on Thursday, October 4, 2012 at 9:55pm.

- Algebra -
**Reiny**, Thursday, October 4, 2012 at 10:07pmyellow marbles ---- x

blue marbles ------ 2x

red marbles ------- x+10

total = 4x + 10

prob to choose a yellow = x/(4x+10) = 1/5

5x = 4x+10

x = 10

10 yellows , 20 blues, and 20 reds for a total of 50 marbles

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