Answers

2016-02-19T18:56:01+08:00
2016-02-20T15:51:40+08:00
It's 23/27...
solution:
1 add all chips
2 add white and red chips 
3 sum of all chips minus  sum of white and red
4 use the answer from step 3 as the numerator,and in the step 2 as the                      denominator
5 reduce it to lowest form
0