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As per my understanding we have to find the ration of cookies in green tin to cookies in other tins (blue + red) but the explanation says it is the ration of cookies in green tin to cookies in green + red tin???
[spoiler]
OA is C[/spoiler]
red= 1/3
diebeatsthegmat wrote:red= 1/3
G+B=2/3
B=1/4 so 2/3-1/4=5/12
thus G=5 parts
R=3
and blue =4
the importance is that you have to understand the last sentence,,,we have to find the faction of geen/(green+blue)
it is 5/9